diff --git a/packages/pytest-simcore/src/pytest_simcore/helpers/assert_checks.py b/packages/pytest-simcore/src/pytest_simcore/helpers/assert_checks.py
index e4df1c1bf80..2f71de33e25 100644
--- a/packages/pytest-simcore/src/pytest_simcore/helpers/assert_checks.py
+++ b/packages/pytest-simcore/src/pytest_simcore/helpers/assert_checks.py
@@ -7,7 +7,7 @@
 from aiohttp import ClientResponse
 from servicelib.aiohttp import status
 from servicelib.aiohttp.rest_responses import unwrap_envelope
-from servicelib.status_utils import get_code_display_name, is_error
+from servicelib.status_codes_utils import get_code_display_name, is_error
 
 
 async def assert_status(
@@ -15,6 +15,7 @@ async def assert_status(
     expected_status_code: int,
     expected_msg: str | None = None,
     expected_error_code: str | None = None,
+    *,
     include_meta: bool | None = False,
     include_links: bool | None = False,
 ) -> tuple[dict, ...]:
diff --git a/packages/pytest-simcore/src/pytest_simcore/helpers/webserver_parametrizations.py b/packages/pytest-simcore/src/pytest_simcore/helpers/webserver_parametrizations.py
index 747d1a1193f..6422122f4f4 100644
--- a/packages/pytest-simcore/src/pytest_simcore/helpers/webserver_parametrizations.py
+++ b/packages/pytest-simcore/src/pytest_simcore/helpers/webserver_parametrizations.py
@@ -2,7 +2,7 @@
 from unittest import mock
 
 from servicelib.aiohttp import status
-from servicelib.status_utils import get_code_display_name
+from servicelib.status_codes_utils import get_code_display_name
 from simcore_postgres_database.models.users import UserRole
 
 
diff --git a/packages/service-library/src/servicelib/aiohttp/long_running_tasks/_routes.py b/packages/service-library/src/servicelib/aiohttp/long_running_tasks/_routes.py
index 8aad57ba6ce..d2e2dda98bf 100644
--- a/packages/service-library/src/servicelib/aiohttp/long_running_tasks/_routes.py
+++ b/packages/service-library/src/servicelib/aiohttp/long_running_tasks/_routes.py
@@ -4,11 +4,11 @@
 from aiohttp import web
 from models_library.utils.json_serialization import json_dumps
 from pydantic import BaseModel
+from servicelib.aiohttp import status
 
 from ...long_running_tasks._errors import TaskNotCompletedError, TaskNotFoundError
 from ...long_running_tasks._models import TaskGet, TaskId, TaskStatus
 from ...long_running_tasks._task import TrackedTask
-from ...mimetype_constants import MIMETYPE_APPLICATION_JSON
 from ..requests_validation import parse_request_path_parameters_as
 from ._dependencies import get_task_context, get_tasks_manager
 
@@ -89,7 +89,7 @@ async def cancel_and_delete_task(request: web.Request) -> web.Response:
     tasks_manager = get_tasks_manager(request.app)
     task_context = get_task_context(request)
     await tasks_manager.remove_task(path_params.task_id, with_task_context=task_context)
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 __all__: tuple[str, ...] = (
diff --git a/packages/service-library/src/servicelib/aiohttp/rest_responses.py b/packages/service-library/src/servicelib/aiohttp/rest_responses.py
index dda73210865..52aa87497d8 100644
--- a/packages/service-library/src/servicelib/aiohttp/rest_responses.py
+++ b/packages/service-library/src/servicelib/aiohttp/rest_responses.py
@@ -13,7 +13,7 @@
 from servicelib.aiohttp.status import HTTP_200_OK
 
 from ..mimetype_constants import MIMETYPE_APPLICATION_JSON
-from ..status_utils import get_code_description
+from ..status_codes_utils import get_code_description
 from .rest_models import ErrorItemType, ErrorType
 
 _ENVELOPE_KEYS = ("data", "error")
@@ -151,16 +151,3 @@ def _pred(obj) -> bool:
     assert len(http_statuses) == len(found), "No duplicates"  # nosec
 
     return http_statuses
-
-
-_STATUS_CODE_TO_HTTP_ERRORS: dict[int, type[HTTPError]] = _collect_http_exceptions(
-    HTTPError
-)
-
-
-def get_http_error(status_code: int) -> type[HTTPError] | None:
-    """Returns aiohttp error class corresponding to a 4XX or 5XX status code
-
-    NOTICE that any non-error code (i.e. 2XX, 3XX and 4XX) will return None
-    """
-    return _STATUS_CODE_TO_HTTP_ERRORS.get(status_code)
diff --git a/packages/service-library/src/servicelib/aiohttp/web_exceptions_extension.py b/packages/service-library/src/servicelib/aiohttp/web_exceptions_extension.py
index 47bfa594171..eaf0cfc42a3 100644
--- a/packages/service-library/src/servicelib/aiohttp/web_exceptions_extension.py
+++ b/packages/service-library/src/servicelib/aiohttp/web_exceptions_extension.py
@@ -1,8 +1,85 @@
-from aiohttp.web_exceptions import HTTPClientError
+""" Extends `aiohttp.web_exceptions` classes to match `status` codes
+    and adds helper functions.
+"""
+
+import inspect
+from typing import Any, TypeVar
+
+from aiohttp import web_exceptions
+from aiohttp.web_exceptions import (
+    HTTPClientError,
+    HTTPError,
+    HTTPException,
+    HTTPServerError,
+)
 
 from . import status
 
+assert issubclass(HTTPError, HTTPException)  # nsoec
+
+# NOTE: these are the status codes that DO NOT have an aiohttp.HTTPException associated
+STATUS_CODES_WITHOUT_AIOHTTP_EXCEPTION_CLASS = (
+    status.HTTP_100_CONTINUE,
+    status.HTTP_101_SWITCHING_PROTOCOLS,
+    status.HTTP_102_PROCESSING,
+    status.HTTP_103_EARLY_HINTS,
+    status.HTTP_207_MULTI_STATUS,
+    status.HTTP_208_ALREADY_REPORTED,
+    status.HTTP_226_IM_USED,
+    status.HTTP_306_RESERVED,
+    status.HTTP_418_IM_A_TEAPOT,
+    status.HTTP_425_TOO_EARLY,
+)
+
 
 class HTTPLockedError(HTTPClientError):
     # pylint: disable=too-many-ancestors
     status_code = status.HTTP_423_LOCKED
+
+
+class HTTPLoopDetectedError(HTTPServerError):
+    # pylint: disable=too-many-ancestors
+    status_code = status.HTTP_508_LOOP_DETECTED
+
+
+E = TypeVar("E", bound="HTTPException")
+
+
+def get_all_aiohttp_http_exceptions(
+    base_http_exception_cls: type[E],
+) -> dict[int, type[E]]:
+    # Inverse map from code to HTTPException classes
+
+    def _pred(obj) -> bool:
+        return (
+            inspect.isclass(obj)
+            and issubclass(obj, base_http_exception_cls)
+            and getattr(obj, "status_code", 0) > 0
+        )
+
+    found: list[tuple[str, Any]] = inspect.getmembers(web_exceptions, _pred)
+    assert found  # nosec
+
+    status_to_http_exception_map = {cls.status_code: cls for _, cls in found}
+    assert len(status_to_http_exception_map) == len(found), "No duplicates"  # nosec
+
+    for cls in (
+        HTTPLockedError,
+        HTTPLoopDetectedError,
+    ):
+        status_to_http_exception_map[cls.status_code] = cls
+
+    return status_to_http_exception_map
+
+
+_STATUS_CODE_TO_HTTP_ERRORS: dict[
+    int, type[HTTPError]
+] = get_all_aiohttp_http_exceptions(HTTPError)
+
+
+def get_http_error_class_or_none(status_code: int) -> type[HTTPError] | None:
+    """Returns aiohttp error class corresponding to a 4XX or 5XX status code
+
+    NOTE: any non-error code (i.e. 2XX, 3XX and 4XX) will return None
+    """
+    return _STATUS_CODE_TO_HTTP_ERRORS.get(status_code)
diff --git a/packages/service-library/src/servicelib/status_utils.py b/packages/service-library/src/servicelib/status_codes_utils.py
similarity index 87%
rename from packages/service-library/src/servicelib/status_utils.py
rename to packages/service-library/src/servicelib/status_codes_utils.py
index 2ebbf61d19b..d50ae7ec681 100644
--- a/packages/service-library/src/servicelib/status_utils.py
+++ b/packages/service-library/src/servicelib/status_codes_utils.py
@@ -2,7 +2,7 @@
 
     - on aiohttp services
         from servicelib.aiohttp import status
-        from servicelib.status_utils import is_success
+        from servicelib.status_codes_utils import is_success
 
         assert is_success(status.HTTP_200_OK)
 
@@ -10,7 +10,7 @@
     - on fastapi services
 
         from fastapi import status
-        from servicelib.status_utils import is_success
+        from servicelib.status_codes_utils import is_success
 
         assert is_success(status.HTTP_200_OK)
 
@@ -37,6 +37,7 @@ def get_code_display_name(status_code: int) -> str:
         return f"HTTP_{status_code}_{code.name}"
     except ValueError:
         if status_code == 306:  # noqa: PLR2004
+            # NOTE: HttpStatus does not include 306
             return "HTTP_306_RESERVED"
         return _INVALID_STATUS_CODE_MSG
 
@@ -65,35 +66,35 @@ def get_code_description(status_code: int) -> str:
     )
 
 
-def is_informational(status_code: int) -> bool:
+def is_1xx_informational(status_code: int) -> bool:
     """
     Returns `True` for 1xx status codes, `False` otherwise.
     """
     return 100 <= status_code <= 199  # noqa: PLR2004
 
 
-def is_success(status_code: int) -> bool:
+def is_2xx_success(status_code: int) -> bool:
     """
     Returns `True` for 2xx status codes, `False` otherwise.
     """
     return 200 <= status_code <= 299  # noqa: PLR2004
 
 
-def is_redirect(status_code: int) -> bool:
+def is_3xx_redirect(status_code: int) -> bool:
     """
     Returns `True` for 3xx status codes, `False` otherwise.
     """
     return 300 <= status_code <= 399  # noqa: PLR2004
 
 
-def is_client_error(status_code: int) -> bool:
+def is_4xx_client_error(status_code: int) -> bool:
     """
     Returns `True` for 4xx status codes, `False` otherwise.
     """
     return 400 <= status_code <= 499  # noqa: PLR2004
 
 
-def is_server_error(status_code: int) -> bool:
+def is_5xx_server_error(status_code: int) -> bool:
     """
     Returns `True` for 5xx status codes, `False` otherwise.
     """
diff --git a/packages/service-library/tests/aiohttp/test_rest_responses.py b/packages/service-library/tests/aiohttp/test_rest_responses.py
index 7077a93cb0f..d1b28d1e9fe 100644
--- a/packages/service-library/tests/aiohttp/test_rest_responses.py
+++ b/packages/service-library/tests/aiohttp/test_rest_responses.py
@@ -16,16 +16,13 @@
     HTTPOk,
 )
 from servicelib.aiohttp import status
-from servicelib.aiohttp.rest_responses import (
+from servicelib.aiohttp.rest_responses import create_http_error, exception_to_response
+from servicelib.aiohttp.web_exceptions_extension import (
     _STATUS_CODE_TO_HTTP_ERRORS,
-    create_http_error,
-    exception_to_response,
-    get_http_error,
+    get_http_error_class_or_none,
 )
 from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
-#
-
 # SEE https://httpstatuses.com/
 # - below 1xx  -> invalid
 BELOW_1XX = (-5, 0, 5, 99)
@@ -36,17 +33,17 @@
 
 
 @pytest.mark.parametrize(
-    "http_exc", (HTTPBadRequest, HTTPGone, HTTPInternalServerError)
+    "http_exc", [HTTPBadRequest, HTTPGone, HTTPInternalServerError]
 )
 def test_get_http_exception_class_from_code(http_exc: HTTPException):
-    assert get_http_error(http_exc.status_code) == http_exc
+    assert get_http_error_class_or_none(http_exc.status_code) == http_exc
 
 
 @pytest.mark.parametrize(
     "status_code", itertools.chain(BELOW_1XX, NONE_ERRORS, ABOVE_599)
 )
 def test_get_none_for_invalid_or_not_errors_code(status_code):
-    assert get_http_error(status_code) is None
+    assert get_http_error_class_or_none(status_code) is None
 
 
 @pytest.mark.parametrize(
diff --git a/packages/service-library/tests/aiohttp/test_status_utils.py b/packages/service-library/tests/aiohttp/test_status_utils.py
index cfddc0294f9..c5a8785a3b1 100644
--- a/packages/service-library/tests/aiohttp/test_status_utils.py
+++ b/packages/service-library/tests/aiohttp/test_status_utils.py
@@ -1,17 +1,23 @@
 from http import HTTPStatus
 
+import pytest
 from servicelib.aiohttp import status
-from servicelib.status_utils import (
+from servicelib.aiohttp.web_exceptions_extension import (
+    STATUS_CODES_WITHOUT_AIOHTTP_EXCEPTION_CLASS,
+    HTTPException,
+    get_all_aiohttp_http_exceptions,
+)
+from servicelib.status_codes_utils import (
     _INVALID_STATUS_CODE_MSG,
     get_code_description,
     get_code_display_name,
     get_http_status_codes,
-    is_client_error,
+    is_1xx_informational,
+    is_2xx_success,
+    is_3xx_redirect,
+    is_4xx_client_error,
+    is_5xx_server_error,
     is_error,
-    is_informational,
-    is_redirect,
-    is_server_error,
-    is_success,
 )
 
 
@@ -31,12 +37,12 @@ def test_description():
 
 def test_status_codes_checks():
 
-    assert is_informational(status.HTTP_102_PROCESSING)
-    assert is_success(status.HTTP_202_ACCEPTED)
-    assert is_redirect(status.HTTP_301_MOVED_PERMANENTLY)
+    assert is_1xx_informational(status.HTTP_102_PROCESSING)
+    assert is_2xx_success(status.HTTP_202_ACCEPTED)
+    assert is_3xx_redirect(status.HTTP_301_MOVED_PERMANENTLY)
 
-    assert is_client_error(status.HTTP_401_UNAUTHORIZED)
-    assert is_server_error(status.HTTP_503_SERVICE_UNAVAILABLE)
+    assert is_4xx_client_error(status.HTTP_401_UNAUTHORIZED)
+    assert is_5xx_server_error(status.HTTP_503_SERVICE_UNAVAILABLE)
 
     assert is_error(status.HTTP_401_UNAUTHORIZED)
     assert is_error(status.HTTP_503_SERVICE_UNAVAILABLE)
@@ -45,7 +51,7 @@ def test_status_codes_checks():
 def test_predicates_with_status():
 
     # in formational
-    assert get_http_status_codes(status, is_informational) == [
+    assert get_http_status_codes(status, is_1xx_informational) == [
         status.HTTP_100_CONTINUE,
         status.HTTP_101_SWITCHING_PROTOCOLS,
         status.HTTP_102_PROCESSING,
@@ -61,3 +67,17 @@ def test_predicates_with_status():
         for c in get_http_status_codes(status)
         if c != status.HTTP_306_RESERVED
     ]
+
+
+AIOHTTP_EXCEPTION_CLASSES_MAP: dict[
+    int, type[HTTPException]
+] = get_all_aiohttp_http_exceptions(HTTPException)
+
+
+@pytest.mark.parametrize("status_code", get_http_status_codes(status))
+def test_how_status_codes_map_to_aiohttp_exception_class(status_code):
+    aiohttp_exception_cls = AIOHTTP_EXCEPTION_CLASSES_MAP.get(status_code)
+    if status_code in STATUS_CODES_WITHOUT_AIOHTTP_EXCEPTION_CLASS:
+        assert aiohttp_exception_cls is None
+    else:
+        assert aiohttp_exception_cls is not None
diff --git a/services/storage/src/simcore_service_storage/handlers_files.py b/services/storage/src/simcore_service_storage/handlers_files.py
index 8cb96d267a2..87cb60d5829 100644
--- a/services/storage/src/simcore_service_storage/handlers_files.py
+++ b/services/storage/src/simcore_service_storage/handlers_files.py
@@ -1,7 +1,7 @@
 import asyncio
 import logging
 import urllib.parse
-from typing import NoReturn, cast
+from typing import cast
 
 from aiohttp import web
 from aiohttp.web import RouteTableDef
@@ -25,7 +25,6 @@
     parse_request_path_parameters_as,
     parse_request_query_parameters_as,
 )
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
 from ._meta import API_VTAG
 from .dsm import get_dsm_provider
@@ -249,7 +248,7 @@ async def upload_file(request: web.Request) -> web.Response:
     f"/{API_VTAG}/locations/{{location_id}}/files/{{file_id}}:abort",
     name="abort_upload_file",
 )
-async def abort_upload_file(request: web.Request) -> NoReturn:
+async def abort_upload_file(request: web.Request) -> web.Response:
     query_params: StorageQueryParamsBase = parse_request_query_parameters_as(
         StorageQueryParamsBase, request
     )
@@ -261,7 +260,7 @@ async def abort_upload_file(request: web.Request) -> NoReturn:
 
     dsm = get_dsm_provider(request.app).get(path_params.location_id)
     await dsm.abort_file_upload(query_params.user_id, path_params.file_id)
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(
@@ -374,7 +373,7 @@ async def is_completed_upload_file(request: web.Request) -> web.Response:
 @routes.delete(
     f"/{API_VTAG}/locations/{{location_id}}/files/{{file_id}}", name="delete_file"
 )
-async def delete_file(request: web.Request) -> NoReturn:
+async def delete_file(request: web.Request) -> web.Response:
     query_params: StorageQueryParamsBase = parse_request_query_parameters_as(
         StorageQueryParamsBase, request
     )
@@ -386,7 +385,7 @@ async def delete_file(request: web.Request) -> NoReturn:
 
     dsm = get_dsm_provider(request.app).get(path_params.location_id)
     await dsm.delete_file(query_params.user_id, path_params.file_id)
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(f"/{API_VTAG}/files/{{file_id}}:soft-copy", name="copy_as_soft_link")
diff --git a/services/storage/src/simcore_service_storage/handlers_simcore_s3.py b/services/storage/src/simcore_service_storage/handlers_simcore_s3.py
index a4fff084329..0f8e52fa7fc 100644
--- a/services/storage/src/simcore_service_storage/handlers_simcore_s3.py
+++ b/services/storage/src/simcore_service_storage/handlers_simcore_s3.py
@@ -1,5 +1,5 @@
 import logging
-from typing import NoReturn, cast
+from typing import cast
 
 from aiohttp import web
 from aiohttp.web import RouteTableDef
@@ -7,6 +7,7 @@
 from models_library.projects import ProjectID
 from models_library.utils.fastapi_encoders import jsonable_encoder
 from models_library.utils.json_serialization import json_dumps
+from servicelib.aiohttp import status
 from servicelib.aiohttp.long_running_tasks.server import (
     TaskProgress,
     start_long_running_task,
@@ -106,7 +107,7 @@ async def copy_folders_from_project(request: web.Request) -> web.Response:
 @routes.delete(
     f"/{API_VTAG}/simcore-s3/folders/{{folder_id}}", name="delete_folders_of_project"
 )
-async def delete_folders_of_project(request: web.Request) -> NoReturn:
+async def delete_folders_of_project(request: web.Request) -> web.Response:
     query_params: DeleteFolderQueryParams = parse_request_query_parameters_as(
         DeleteFolderQueryParams, request
     )
@@ -126,7 +127,7 @@ async def delete_folders_of_project(request: web.Request) -> NoReturn:
         query_params.node_id,
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(f"/{API_VTAG}/simcore-s3/files/metadata:search", name="search_files")
diff --git a/services/web/server/src/simcore_service_webserver/api_keys/_handlers.py b/services/web/server/src/simcore_service_webserver/api_keys/_handlers.py
index ce7a7be0943..627d733d9c7 100644
--- a/services/web/server/src/simcore_service_webserver/api_keys/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/api_keys/_handlers.py
@@ -5,6 +5,7 @@
 from models_library.api_schemas_webserver.auth import ApiKeyCreate
 from models_library.users import UserID
 from pydantic import Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import RequestParams, parse_request_body_as
 from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from simcore_postgres_database.errors import DatabaseError
@@ -84,4 +85,4 @@ async def delete_api_key(request: web.Request):
             "Failed to delete API key %s. Ignoring error", name, exc_info=err
         )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/director_v2/_handlers.py b/services/web/server/src/simcore_service_webserver/director_v2/_handlers.py
index fb80f3aa3fa..f794fa6f148 100644
--- a/services/web/server/src/simcore_service_webserver/director_v2/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/director_v2/_handlers.py
@@ -10,16 +10,13 @@
 from models_library.utils.json_serialization import json_dumps
 from pydantic import BaseModel, Field, ValidationError, parse_obj_as
 from pydantic.types import NonNegativeInt
-from servicelib.aiohttp.rest_responses import (
-    create_http_error,
-    exception_to_response,
-    get_http_error,
-)
+from servicelib.aiohttp import status
+from servicelib.aiohttp.rest_responses import create_http_error, exception_to_response
+from servicelib.aiohttp.web_exceptions_extension import get_http_error_class_or_none
 from servicelib.common_headers import (
     UNDEFINED_DEFAULT_SIMCORE_USER_AGENT_VALUE,
     X_SIMCORE_USER_AGENT,
 )
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.request_keys import RQT_USERID_KEY
 from simcore_postgres_database.utils_groups_extra_properties import (
     GroupExtraPropertiesRepo,
@@ -170,7 +167,8 @@ async def start_computation(request: web.Request) -> web.Response:
             create_http_error(
                 exc,
                 reason=exc.reason,
-                http_error_cls=get_http_error(exc.status) or web.HTTPServiceUnavailable,
+                http_error_cls=get_http_error_class_or_none(exc.status)
+                or web.HTTPServiceUnavailable,
             )
         )
     except UserDefaultWalletNotFoundError as exc:
@@ -204,19 +202,14 @@ async def stop_computation(request: web.Request) -> web.Response:
         await asyncio.gather(
             *[computations.stop(pid, req_ctx.user_id) for pid in project_ids]
         )
-
-        # NOTE: our middleware has this issue
-        #
-        #  if 'return web.HTTPNoContent()' then 'await response.json()' raises ContentTypeError
-        #  if 'raise web.HTTPNoContent()' then 'await response.json() == None'
-        #
-        raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+        return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
     except DirectorServiceError as exc:
         return create_http_error(
             exc,
             reason=exc.reason,
-            http_error_cls=get_http_error(exc.status) or web.HTTPServiceUnavailable,
+            http_error_cls=get_http_error_class_or_none(exc.status)
+            or web.HTTPServiceUnavailable,
         )
 
 
@@ -265,7 +258,8 @@ async def get_computation(request: web.Request) -> web.Response:
         return create_http_error(
             exc,
             reason=exc.reason,
-            http_error_cls=get_http_error(exc.status) or web.HTTPServiceUnavailable,
+            http_error_cls=get_http_error_class_or_none(exc.status)
+            or web.HTTPServiceUnavailable,
         )
     except ValidationError as exc:
         return create_http_error(exc, http_error_cls=web.HTTPInternalServerError)
diff --git a/services/web/server/src/simcore_service_webserver/folders/_folders_handlers.py b/services/web/server/src/simcore_service_webserver/folders/_folders_handlers.py
index 4b212524079..f331c98da4a 100644
--- a/services/web/server/src/simcore_service_webserver/folders/_folders_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/folders/_folders_handlers.py
@@ -17,6 +17,7 @@
 from models_library.utils.common_validators import null_or_none_str_to_none_validator
 from models_library.workspaces import WorkspaceID
 from pydantic import Extra, Field, Json, parse_obj_as, validator
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     RequestParams,
     StrictRequestParams,
@@ -246,4 +247,4 @@ async def delete_folder_group(request: web.Request):
         folder_id=path_params.folder_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/groups/_handlers.py b/services/web/server/src/simcore_service_webserver/groups/_handlers.py
index 2f0b0411601..b6284bed8bf 100644
--- a/services/web/server/src/simcore_service_webserver/groups/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/groups/_handlers.py
@@ -13,6 +13,7 @@
 from models_library.users import GroupID, UserID
 from models_library.utils.json_serialization import json_dumps
 from pydantic import BaseModel, Extra, Field, parse_obj_as
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_path_parameters_as,
     parse_request_query_parameters_as,
@@ -169,7 +170,7 @@ async def delete_group(request: web.Request):
     path_params = parse_request_path_parameters_as(_GroupPathParams, request)
 
     await api.delete_user_group(request.app, req_ctx.user_id, path_params.gid)
-    raise web.HTTPNoContent
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.get(f"/{API_VTAG}/groups/{{gid}}/users", name="get_group_users")
@@ -215,7 +216,7 @@ async def add_group_user(request: web.Request):
         new_user_id=new_user_id,
         new_user_email=new_user_email,
     )
-    raise web.HTTPNoContent
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 class _GroupUserPathParams(BaseModel):
@@ -275,7 +276,7 @@ async def delete_group_user(request: web.Request):
     await api.delete_user_in_group(
         request.app, req_ctx.user_id, path_params.gid, path_params.uid
     )
-    raise web.HTTPNoContent
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
diff --git a/services/web/server/src/simcore_service_webserver/login/_registration_handlers.py b/services/web/server/src/simcore_service_webserver/login/_registration_handlers.py
index 2ad608e3c12..869fa7a2973 100644
--- a/services/web/server/src/simcore_service_webserver/login/_registration_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/login/_registration_handlers.py
@@ -8,6 +8,7 @@
 )
 from models_library.users import UserID
 from pydantic import BaseModel, Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.application_keys import APP_FIRE_AND_FORGET_TASKS_KEY
 from servicelib.aiohttp.requests_validation import parse_request_body_as
 from servicelib.logging_utils import get_log_record_extra, log_context
@@ -85,7 +86,7 @@ async def request_product_account(request: web.Request):
         task_suffix_name=f"{__name__}.request_product_account.send_account_request_email_to_support",
         fire_and_forget_tasks_collection=request.app[APP_FIRE_AND_FORGET_TASKS_KEY],
     )
-    raise web.HTTPNoContent
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 class _AuthenticatedContext(BaseModel):
diff --git a/services/web/server/src/simcore_service_webserver/projects/_comments_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_comments_handlers.py
index fff41cd016c..5325f389e9a 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_comments_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_comments_handlers.py
@@ -16,6 +16,7 @@
 )
 from models_library.rest_pagination_utils import paginate_data
 from pydantic import BaseModel, Extra, Field, NonNegativeInt
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
@@ -223,7 +224,7 @@ async def delete_project_comment(request: web.Request):
         request=request,
         comment_id=path_params.comment_id,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.get(
diff --git a/services/web/server/src/simcore_service_webserver/projects/_crud_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_crud_handlers.py
index d2cce731d21..11d1f701b32 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_crud_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_crud_handlers.py
@@ -26,6 +26,7 @@
 from models_library.utils.fastapi_encoders import jsonable_encoder
 from models_library.utils.json_serialization import json_dumps
 from pydantic import parse_obj_as
+from servicelib.aiohttp import status
 from servicelib.aiohttp.long_running_tasks.server import start_long_running_task
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
@@ -576,7 +577,7 @@ async def patch_project(request: web.Request):
         product_name=req_ctx.product_name,
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
@@ -661,7 +662,7 @@ async def delete_project(request: web.Request):
     except ProjectDeleteError as err:
         raise web.HTTPConflict(reason=f"{err}") from err
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
diff --git a/services/web/server/src/simcore_service_webserver/projects/_folders_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_folders_handlers.py
index 591fecf8a94..0e22c5970b9 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_folders_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_folders_handlers.py
@@ -6,9 +6,9 @@
 from models_library.projects import ProjectID
 from models_library.utils.common_validators import null_or_none_str_to_none_validator
 from pydantic import BaseModel, Extra, validator
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import parse_request_path_parameters_as
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
 from .._meta import api_version_prefix as VTAG
 from ..login.decorators import login_required
@@ -69,4 +69,4 @@ async def replace_project_folder(request: web.Request):
         folder_id=path_params.folder_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/projects/_groups_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_groups_handlers.py
index 607dd499df2..85c71d0d62d 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_groups_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_groups_handlers.py
@@ -9,12 +9,12 @@
 from models_library.projects import ProjectID
 from models_library.users import GroupID
 from pydantic import BaseModel, Extra
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
 from .._meta import api_version_prefix as VTAG
 from ..login.decorators import login_required
@@ -154,4 +154,4 @@ async def delete_project_group(request: web.Request):
         group_id=path_params.group_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/projects/_nodes_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_nodes_handlers.py
index 255260c60ad..fd7a21eaad6 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_nodes_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_nodes_handlers.py
@@ -33,6 +33,7 @@
 from models_library.utils.fastapi_encoders import jsonable_encoder
 from models_library.utils.json_serialization import json_dumps
 from pydantic import BaseModel, Field, parse_obj_as
+from servicelib.aiohttp import status
 from servicelib.aiohttp.long_running_tasks.server import (
     TaskProgress,
     start_long_running_task,
@@ -238,7 +239,7 @@ async def patch_project_node(request: web.Request) -> web.Response:
         node_patch=node_patch,
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.delete(f"/{VTAG}/projects/{{project_id}}/nodes/{{node_id}}", name="delete_node")
@@ -263,7 +264,7 @@ async def delete_node(request: web.Request) -> web.Response:
         req_ctx.product_name,
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(
@@ -310,7 +311,7 @@ async def update_node_outputs(request: web.Request) -> web.Response:
         node_errors=None,
         ui_changed_keys=ui_changed_keys,
     )
-    return web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(
@@ -333,7 +334,7 @@ async def start_node(request: web.Request) -> web.Response:
         node_id=path_params.node_id,
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 async def _stop_dynamic_service_task(
@@ -347,15 +348,15 @@ async def _stop_dynamic_service_task(
         await dynamic_scheduler_api.stop_dynamic_service(
             app, dynamic_service_stop=dynamic_service_stop
         )
-        raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+        return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
-    # in case there is an error reply as not found
     except (RPCServerError, ServiceWaitingForManualInterventionError) as exc:
+        # in case there is an error reply as not found
         raise web.HTTPNotFound(reason=f"{exc}") from exc
 
-    # in case the service is not found reply as all OK
-    except ServiceWasNotFoundError as exc:
-        raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON) from exc
+    except ServiceWasNotFoundError:
+        # in case the service is not found reply as all OK
+        return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.post(
@@ -413,7 +414,7 @@ async def restart_node(request: web.Request) -> web.Response:
 
     await director_v2_api.restart_dynamic_service(request.app, f"{path_params.node_id}")
 
-    raise web.HTTPNoContent
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
diff --git a/services/web/server/src/simcore_service_webserver/projects/_states_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_states_handlers.py
index fe7c62960f0..ca0725b37b9 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_states_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_states_handlers.py
@@ -10,6 +10,7 @@
 from aiohttp import web
 from models_library.projects_state import ProjectState
 from pydantic import BaseModel
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_path_parameters_as,
     parse_request_query_parameters_as,
@@ -20,7 +21,6 @@
     UNDEFINED_DEFAULT_SIMCORE_USER_AGENT_VALUE,
     X_SIMCORE_USER_AGENT,
 )
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from simcore_postgres_database.models.users import UserRole
 from simcore_postgres_database.webserver_models import ProjectType
 
@@ -222,7 +222,7 @@ async def close_project(request: web.Request) -> web.Response:
         ),
     )
     await project_logs.unsubscribe(request.app, path_params.project_id)
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
diff --git a/services/web/server/src/simcore_service_webserver/projects/_workspaces_handlers.py b/services/web/server/src/simcore_service_webserver/projects/_workspaces_handlers.py
index e262ce8dc29..6b553a6d3ba 100644
--- a/services/web/server/src/simcore_service_webserver/projects/_workspaces_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/projects/_workspaces_handlers.py
@@ -6,9 +6,9 @@
 from models_library.utils.common_validators import null_or_none_str_to_none_validator
 from models_library.workspaces import WorkspaceID
 from pydantic import BaseModel, Extra, validator
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import parse_request_path_parameters_as
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
 from .._meta import api_version_prefix as VTAG
 from ..folders.errors import FolderAccessForbiddenError, FolderNotFoundError
@@ -81,4 +81,4 @@ async def replace_project_workspace(request: web.Request):
         workspace_id=path_params.workspace_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/publications/_handlers.py b/services/web/server/src/simcore_service_webserver/publications/_handlers.py
index 3a88ca641c5..2d7feef016f 100644
--- a/services/web/server/src/simcore_service_webserver/publications/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/publications/_handlers.py
@@ -3,6 +3,7 @@
 from aiohttp import MultipartReader, hdrs, web
 from json2html import json2html  # type: ignore[import-untyped]
 from models_library.utils.json_serialization import json_dumps
+from servicelib.aiohttp import status
 from servicelib.mimetype_constants import (
     MIMETYPE_APPLICATION_JSON,
     MIMETYPE_APPLICATION_ZIP,
@@ -93,4 +94,4 @@ async def service_submission(request: web.Request):
         _logger.exception("Error while sending the 'new service submission' mail.")
         raise web.HTTPServiceUnavailable from exc
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/tags/_handlers.py b/services/web/server/src/simcore_service_webserver/tags/_handlers.py
index 5492d5e468e..8862f0320c1 100644
--- a/services/web/server/src/simcore_service_webserver/tags/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/tags/_handlers.py
@@ -2,6 +2,7 @@
 
 from aiohttp import web
 from pydantic import parse_obj_as
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
@@ -107,7 +108,7 @@ async def delete_tag(request: web.Request):
         request.app, user_id=req_ctx.user_id, tag_id=path_params.tag_id
     )
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
diff --git a/services/web/server/src/simcore_service_webserver/users/_handlers.py b/services/web/server/src/simcore_service_webserver/users/_handlers.py
index 3e2018c7d9b..3462602f74b 100644
--- a/services/web/server/src/simcore_service_webserver/users/_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/users/_handlers.py
@@ -4,13 +4,13 @@
 from aiohttp import web
 from models_library.users import UserID
 from pydantic import BaseModel, Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_query_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
 from servicelib.logging_errors import create_troubleshotting_log_kwargs
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.request_keys import RQT_USERID_KEY
 from servicelib.rest_constants import RESPONSE_MODEL_POLICY
 
@@ -85,7 +85,7 @@ async def update_my_profile(request: web.Request) -> web.Response:
     await api.update_user_profile(
         request.app, req_ctx.user_id, profile_update, as_patch=False
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 class _SearchQueryParams(BaseModel):
diff --git a/services/web/server/src/simcore_service_webserver/users/_notifications_handlers.py b/services/web/server/src/simcore_service_webserver/users/_notifications_handlers.py
index b30a435210b..3a9588d39a5 100644
--- a/services/web/server/src/simcore_service_webserver/users/_notifications_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/users/_notifications_handlers.py
@@ -4,11 +4,11 @@
 import redis.asyncio as aioredis
 from aiohttp import web
 from pydantic import BaseModel
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.redis_utils import handle_redis_returns_union_types
 
 from .._meta import API_VTAG
@@ -84,7 +84,7 @@ async def create_user_notification(request: web.Request) -> web.Response:
         pipe.ltrim(key, 0, MAX_NOTIFICATIONS_FOR_USER_TO_KEEP - 1)
         await pipe.execute()
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 class _NotificationPathParams(BaseModel):
@@ -115,9 +115,9 @@ async def mark_notification_as_read(request: web.Request) -> web.Response:
             await handle_redis_returns_union_types(
                 redis_client.lset(key, k, user_notification.json())
             )
-            raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+            return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.get(f"/{API_VTAG}/me/permissions", name="list_user_permissions")
diff --git a/services/web/server/src/simcore_service_webserver/users/_preferences_handlers.py b/services/web/server/src/simcore_service_webserver/users/_preferences_handlers.py
index 9f5513b904f..0c537278f9c 100644
--- a/services/web/server/src/simcore_service_webserver/users/_preferences_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/users/_preferences_handlers.py
@@ -8,12 +8,12 @@
 from models_library.products import ProductName
 from models_library.users import UserID
 from pydantic import BaseModel, Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.request_keys import RQT_USERID_KEY
 from simcore_postgres_database.utils_user_preferences import (
     CouldNotCreateOrUpdateUserPreferenceError,
@@ -66,4 +66,4 @@ async def set_frontend_preference(request: web.Request) -> web.Response:
         frontend_preference_identifier=req_path_params.preference_id,
         value=req_body.value,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/users/_tokens_handlers.py b/services/web/server/src/simcore_service_webserver/users/_tokens_handlers.py
index ddca5a94b2f..40b884c4eb9 100644
--- a/services/web/server/src/simcore_service_webserver/users/_tokens_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/users/_tokens_handlers.py
@@ -3,12 +3,12 @@
 
 from aiohttp import web
 from pydantic import BaseModel
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 
 from .._meta import API_VTAG
 from ..login.decorators import login_required
@@ -85,4 +85,4 @@ async def delete_token(request: web.Request) -> web.Response:
     req_ctx = UsersRequestContext.parse_obj(request)
     req_path_params = parse_request_path_parameters_as(_TokenPathParams, request)
     await _tokens.delete_token(request.app, req_ctx.user_id, req_path_params.service)
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/wallets/_groups_handlers.py b/services/web/server/src/simcore_service_webserver/wallets/_groups_handlers.py
index 6690d6d41e4..1115a239d62 100644
--- a/services/web/server/src/simcore_service_webserver/wallets/_groups_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/wallets/_groups_handlers.py
@@ -9,12 +9,12 @@
 from models_library.users import GroupID, UserID
 from models_library.wallets import WalletID
 from pydantic import BaseModel, Extra, Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.request_keys import RQT_USERID_KEY
 
 from .._constants import RQ_PRODUCT_KEY
@@ -161,4 +161,4 @@ async def delete_wallet_group(request: web.Request):
         group_id=path_params.group_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/wallets/_payments_handlers.py b/services/web/server/src/simcore_service_webserver/wallets/_payments_handlers.py
index 27060372abd..9a03bc2d2a5 100644
--- a/services/web/server/src/simcore_service_webserver/wallets/_payments_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/wallets/_payments_handlers.py
@@ -15,6 +15,7 @@
 from models_library.products import CreditResultGet
 from models_library.rest_pagination import Page, PageQueryParameters
 from models_library.rest_pagination_utils import paginate_data
+from servicelib.aiohttp import status
 from servicelib.aiohttp.application_keys import APP_FIRE_AND_FORGET_TASKS_KEY
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
@@ -22,7 +23,6 @@
     parse_request_query_parameters_as,
 )
 from servicelib.logging_utils import get_log_record_extra, log_context
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.utils import fire_and_forget_task
 
 from .._meta import API_VTAG as VTAG
@@ -185,7 +185,7 @@ async def _cancel_payment(request: web.Request):
         product_name=req_ctx.product_name,
     )
 
-    return web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 #
@@ -261,7 +261,7 @@ async def _cancel_creation_of_payment_method(request: web.Request):
             product_name=req_ctx.product_name,
         )
 
-    return web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 @routes.get(
@@ -323,7 +323,7 @@ async def _delete_payment_method(request: web.Request):
         payment_method_id=path_params.payment_method_id,
         product_name=req_ctx.product_name,
     )
-    return web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
 
 
 _TINY_WAIT_TO_TRIGGER_CONTEXT_SWITCH = 0.1
diff --git a/services/web/server/src/simcore_service_webserver/workspaces/_groups_handlers.py b/services/web/server/src/simcore_service_webserver/workspaces/_groups_handlers.py
index 0bf7d09eb68..d4ae7c4b74f 100644
--- a/services/web/server/src/simcore_service_webserver/workspaces/_groups_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/workspaces/_groups_handlers.py
@@ -9,12 +9,12 @@
 from models_library.users import GroupID, UserID
 from models_library.workspaces import WorkspaceID
 from pydantic import BaseModel, Extra, Field
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     parse_request_body_as,
     parse_request_path_parameters_as,
 )
 from servicelib.aiohttp.typing_extension import Handler
-from servicelib.mimetype_constants import MIMETYPE_APPLICATION_JSON
 from servicelib.request_keys import RQT_USERID_KEY
 
 from .._constants import RQ_PRODUCT_KEY
@@ -162,4 +162,4 @@ async def delete_workspace_group(request: web.Request):
         group_id=path_params.group_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/src/simcore_service_webserver/workspaces/_workspaces_handlers.py b/services/web/server/src/simcore_service_webserver/workspaces/_workspaces_handlers.py
index 5cc49639334..fa9a2e4aa67 100644
--- a/services/web/server/src/simcore_service_webserver/workspaces/_workspaces_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/workspaces/_workspaces_handlers.py
@@ -15,6 +15,7 @@
 from models_library.users import UserID
 from models_library.workspaces import WorkspaceID
 from pydantic import Extra, Field, Json, parse_obj_as, validator
+from servicelib.aiohttp import status
 from servicelib.aiohttp.requests_validation import (
     RequestParams,
     StrictRequestParams,
@@ -209,4 +210,4 @@ async def delete_workspace(request: web.Request):
         workspace_id=path_params.workspace_id,
         product_name=req_ctx.product_name,
     )
-    raise web.HTTPNoContent(content_type=MIMETYPE_APPLICATION_JSON)
+    return web.json_response(status=status.HTTP_204_NO_CONTENT)
diff --git a/services/web/server/tests/integration/02/test_computation.py b/services/web/server/tests/integration/02/test_computation.py
index 2aa2da0f3dd..0a73402e68d 100644
--- a/services/web/server/tests/integration/02/test_computation.py
+++ b/services/web/server/tests/integration/02/test_computation.py
@@ -20,7 +20,7 @@
 from pytest_simcore.helpers.assert_checks import assert_status
 from servicelib.aiohttp import status
 from servicelib.aiohttp.application import create_safe_application
-from servicelib.status_utils import get_code_display_name
+from servicelib.status_codes_utils import get_code_display_name
 from settings_library.rabbit import RabbitSettings
 from settings_library.redis import RedisSettings
 from simcore_postgres_database.models.projects import projects
diff --git a/services/web/server/tests/unit/isolated/test_security_api.py b/services/web/server/tests/unit/isolated/test_security_api.py
index f7e73620435..e60cab4985b 100644
--- a/services/web/server/tests/unit/isolated/test_security_api.py
+++ b/services/web/server/tests/unit/isolated/test_security_api.py
@@ -156,12 +156,12 @@ async def _init(request: web.Request):
         # get url and deliver product
         product_name = expected_product_name
         await _remember_product_name(request, product_name)
-        return web.HTTPOk()
+        return web.json_response(status=status.HTTP_200_OK)
 
     @routes.post("/v0/hack/{product_name}")
     async def _set_other_product(request: web.Request):
         await _remember_product_name(request, request.match_info["product_name"])
-        return web.HTTPOk()
+        return web.json_response(status=status.HTTP_200_OK)
 
     @routes.post("/v0/login")
     async def _login(request: web.Request):
@@ -183,7 +183,7 @@ async def _login(request: web.Request):
     @routes.post("/v0/public")
     async def _public(request: web.Request):
         assert await _get_product_name(request) == expected_product_name
-        return web.HTTPOk()
+        return web.json_response(status=status.HTTP_200_OK)
 
     @routes.post("/v0/admin")
     @login_required  # NOTE: same as `await check_user_authorized(request)``
@@ -192,7 +192,7 @@ async def _public(request: web.Request):
     )
     async def _admin_only(request: web.Request):
         assert await _get_product_name(request) == expected_product_name
-        return web.HTTPOk()
+        return web.json_response(status=status.HTTP_200_OK)
 
     @routes.post("/v0/logout")
     async def _logout(request: web.Request):