diff --git a/graphql-cop.py b/graphql-cop.py
index 708b78b..6b08df0 100644
--- a/graphql-cop.py
+++ b/graphql-cop.py
@@ -19,6 +19,7 @@
 from lib.tests.dos_circular_introspection import circular_query_introspection
 from lib.tests.info_get_based_mutation import get_based_mutation
 from lib.tests.info_post_based_csrf import post_based_csrf
+from lib.tests.info_unhandled_error import unhandled_error_detection
 from lib.utils import is_graphql, draw_art
 
 
@@ -71,7 +72,8 @@
 tests = [field_suggestions, introspection, detect_graphiql,
          get_method_support, alias_overloading, batch_query,
          field_duplication, trace_mode, directive_overloading,
-         circular_query_introspection, get_based_mutation, post_based_csrf]
+         circular_query_introspection, get_based_mutation, post_based_csrf,
+         unhandled_error_detection]
 
 json_output = []
 
diff --git a/lib/tests/dos_alias_overloading.py b/lib/tests/dos_alias_overloading.py
index 2e576a0..c28aeb9 100644
--- a/lib/tests/dos_alias_overloading.py
+++ b/lib/tests/dos_alias_overloading.py
@@ -17,10 +17,10 @@ def alias_overloading(url, proxy, headers):
   for i in range(0, 101):
      aliases += 'alias{}:__typename \n'.format(i)
 
-  gql_response = graph_query(url, proxies=proxy, headers=headers, payload='query { ' + aliases + ' }')
-  
+  gql_response = graph_query(url, proxies=proxy, headers=headers, payload='query cop { ' + aliases + ' }')
+
   res['curl_verify'] = curlify(gql_response)
-  
+
   try:
     if gql_response.json()['data']['alias100']:
       res['result'] = True
diff --git a/lib/tests/dos_batch.py b/lib/tests/dos_batch.py
index d4ea18b..938e4ed 100644
--- a/lib/tests/dos_batch.py
+++ b/lib/tests/dos_batch.py
@@ -13,7 +13,7 @@ def batch_query(url, proxy, headers):
     'curl_verify':''
   }
 
-  gql_response = graph_query(url, proxies=proxy, headers=headers, payload='query { __typename }', batch=True)
+  gql_response = graph_query(url, proxies=proxy, headers=headers, payload='query cop { __typename }', batch=True)
   
   res['curl_verify'] = curlify(gql_response)
   
diff --git a/lib/tests/dos_circular_introspection.py b/lib/tests/dos_circular_introspection.py
index 50750c7..c935c76 100644
--- a/lib/tests/dos_circular_introspection.py
+++ b/lib/tests/dos_circular_introspection.py
@@ -12,7 +12,7 @@ def circular_query_introspection(url, proxy, headers):
     'curl_verify':''
   }
 
-  q = 'query { __schema { types { fields { type { fields { type { fields { type { fields { type { name } } } } } } } } } } }'
+  q = 'query cop { __schema { types { fields { type { fields { type { fields { type { fields { type { name } } } } } } } } } } }'
 
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
diff --git a/lib/tests/dos_directive_overloading.py b/lib/tests/dos_directive_overloading.py
index 8b1eb35..1a5ac75 100644
--- a/lib/tests/dos_directive_overloading.py
+++ b/lib/tests/dos_directive_overloading.py
@@ -13,10 +13,10 @@ def directive_overloading(url, proxy, headers):
     'curl_verify':''
   }
 
-  q = 'query { __typename @aa@aa@aa@aa@aa@aa@aa@aa@aa@aa }'
+  q = 'query cop { __typename @aa@aa@aa@aa@aa@aa@aa@aa@aa@aa }'
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
-  
+
   try:
     if len(gql_response.json()['errors']) == 10:
       res['result'] = True
diff --git a/lib/tests/dos_field_duplication.py b/lib/tests/dos_field_duplication.py
index 587a719..7a12bae 100644
--- a/lib/tests/dos_field_duplication.py
+++ b/lib/tests/dos_field_duplication.py
@@ -14,10 +14,10 @@ def field_duplication(url, proxy, headers):
   }
 
   duplicated_string = '__typename \n' * 500
-  q = 'query { ' + duplicated_string + '} '
+  q = 'query cop { ' + duplicated_string + '} '
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
-  
+
   try:
     if gql_response.json()['data']['__typename']:
       res['result'] = True
diff --git a/lib/tests/info_field_suggestions.py b/lib/tests/info_field_suggestions.py
index 03c11d6..27b50b0 100644
--- a/lib/tests/info_field_suggestions.py
+++ b/lib/tests/info_field_suggestions.py
@@ -13,10 +13,9 @@ def field_suggestions(url, proxy, headers):
     'curl_verify':''
   }
 
-  q = 'query { __schema { directive } }'
+  q = 'query cop { __schema { directive } }'
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
-  
 
   try:
     if 'Did you mean' in get_error(gql_response.json()):
diff --git a/lib/tests/info_get_based_mutation.py b/lib/tests/info_get_based_mutation.py
index 24e2561..b74d0ad 100644
--- a/lib/tests/info_get_based_mutation.py
+++ b/lib/tests/info_get_based_mutation.py
@@ -12,11 +12,10 @@ def get_based_mutation(url, proxies, headers):
     'curl_verify':''
   }
 
-  q = 'mutation {__typename}'
+  q = 'mutation cop {__typename}'
 
   response = request(url, proxies=proxies, headers=headers, params={'query':q})
   res['curl_verify'] = curlify(response)
-
   try:
     if response and response.json()['data']['__typename']:
         res['result'] = True
diff --git a/lib/tests/info_get_method_support.py b/lib/tests/info_get_method_support.py
index 330cc50..146255c 100644
--- a/lib/tests/info_get_method_support.py
+++ b/lib/tests/info_get_method_support.py
@@ -13,7 +13,7 @@ def get_method_support(url, proxies, headers):
     'curl_verify':''
   }
 
-  q = '{__typename}'
+  q = 'query cop {__typename}'
 
   response = request(url, proxies=proxies, headers=headers, params={'query':q})
   res['curl_verify'] = curlify(response)
diff --git a/lib/tests/info_introspect.py b/lib/tests/info_introspect.py
index 06d07c3..eb7e9e8 100644
--- a/lib/tests/info_introspect.py
+++ b/lib/tests/info_introspect.py
@@ -13,7 +13,7 @@ def introspection(url, proxy, headers):
     'curl_verify':''
   }
 
-  q = 'query { __schema { types { name fields { name } } } }'
+  q = 'query cop { __schema { types { name fields { name } } } }'
 
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
diff --git a/lib/tests/info_post_based_csrf.py b/lib/tests/info_post_based_csrf.py
index 9828415..d8ac981 100644
--- a/lib/tests/info_post_based_csrf.py
+++ b/lib/tests/info_post_based_csrf.py
@@ -12,7 +12,7 @@ def post_based_csrf(url, proxies, headers):
     'curl_verify':''
   }
 
-  q = 'query {__typename}'
+  q = 'query cop {__typename}'
 
   response = request(url, proxies=proxies, headers=headers, params={'query':q}, verb='POST')
   res['curl_verify'] = curlify(response)
diff --git a/lib/tests/info_trace_mode.py b/lib/tests/info_trace_mode.py
index 2accb4c..47180c3 100644
--- a/lib/tests/info_trace_mode.py
+++ b/lib/tests/info_trace_mode.py
@@ -13,14 +13,12 @@ def trace_mode(url, proxy, headers):
     'curl_verify':''
   }
 
-  q = 'query { __typename }'
+  q = 'query cop { __typename }'
   gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
   res['curl_verify'] = curlify(gql_response)
-  
+
   try:
-    if gql_response.json().get('errors', {}).get('extensions', {}).get('tracing'):
-      res['result'] = True
-    elif gql_response.json().get('errors', {}).get('extensions', {}).get('exception', None):
+    if gql_response.json()['errors'][0]['extensions']['tracing']:
       res['result'] = True
     elif 'stacktrace' in str(gql_response.json()).lower():
       res['result'] = True
diff --git a/lib/tests/info_unhandled_error.py b/lib/tests/info_unhandled_error.py
new file mode 100644
index 0000000..a81a538
--- /dev/null
+++ b/lib/tests/info_unhandled_error.py
@@ -0,0 +1,28 @@
+"""Collect trace mode details."""
+from lib.utils import graph_query, curlify
+
+
+def unhandled_error_detection(url, proxy, headers):
+  """Get the trace mode."""
+  res = {
+    'result':False,
+    'title':'Unhandled Errors Detection',
+    'description':'Exception errors are not handled',
+    'impact':'Information Leakage',
+    'severity':'INFO',
+    'curl_verify':''
+  }
+
+  q = 'qwerty cop { abc }'
+  gql_response = graph_query(url, proxies=proxy, headers=headers, payload=q)
+  res['curl_verify'] = curlify(gql_response)
+
+  try:
+    if gql_response.json()['errors'][0]['extensions']['exception']:
+      res['result'] = True
+    elif 'exception' in str(gql_response.json()).lower():
+      res['result'] = True
+  except:
+    pass
+
+  return res
diff --git a/lib/utils.py b/lib/utils.py
index 8fa2f69..fc75ea4 100644
--- a/lib/utils.py
+++ b/lib/utils.py
@@ -29,14 +29,12 @@ def get_error(resp):
 
 def graph_query(url, proxies, headers, operation='query', payload={}, batch=False):
   """Perform a query."""
-  
   if batch:
     data = []
     for _ in range(10):
       data.append({operation:payload})
   else:
-    data = {operation:payload}
-  
+    data = {operation:payload, "operationName":"cop"}
   try:
     response = requests.post(url,
                             headers=headers,
@@ -73,7 +71,7 @@ def request(url, proxies, headers, params=None, data=None, verb='GET'):
 def is_graphql(url, proxies, headers):
   """Check if the URL provides a GraphQL interface."""
   query = '''
-    query {
+    query cop {
       __typename
     }
   '''
@@ -86,9 +84,10 @@ def is_graphql(url, proxies, headers):
   except JSONDecodeError:
     return False
 
-  if response.json().get('data', {}).get('__typename', '') in ('Query', 'QueryRoot', 'query_root'):
-    return True
-  elif response.json().get('errors') and (any('locations' in i for i in response['errors']) or (any('extensions' in i for i in response))):
+  if 'data' in response.json() and response.json()['data'] != None:
+    if response.json()['data']['__typename'] in ('Query', 'QueryRoot', 'query_root', 'Root'):
+      return True
+  elif response.json().get('errors') and (any('locations' in i for i in response.json()['errors']) or (any('extensions' in i for i in response.json()))):
     return True
   elif response.json().get('data'):
     return True
diff --git a/version.py b/version.py
index 84f511c..764ff01 100644
--- a/version.py
+++ b/version.py
@@ -1,2 +1,2 @@
 """Version details of graphql-cop."""
-VERSION = '1.6'
+VERSION = '1.7'