diff --git a/src/gConsent/discover/getAccessApiEndpoint.ts b/src/gConsent/discover/getAccessApiEndpoint.ts
index 4dad5760..116bca1c 100644
--- a/src/gConsent/discover/getAccessApiEndpoint.ts
+++ b/src/gConsent/discover/getAccessApiEndpoint.ts
@@ -23,7 +23,6 @@ import type { UrlString } from "@inrupt/solid-client";
 import { parse } from "auth-header";
 import type { AccessBaseOptions } from "../type/AccessBaseOptions";
 import { AccessGrantError } from "../../common/errors/AccessGrantError";
-import { UmaError } from "../../common/errors/UmaError";
 
 async function getAccessEndpointForResource(
   resource: UrlString,
diff --git a/src/gConsent/discover/getAccessManagementUi.ts b/src/gConsent/discover/getAccessManagementUi.ts
index 22166151..3f02ec9d 100644
--- a/src/gConsent/discover/getAccessManagementUi.ts
+++ b/src/gConsent/discover/getAccessManagementUi.ts
@@ -30,6 +30,7 @@ import {
 import { getSessionFetch } from "../../common/util/getSessionFetch";
 import type { AccessBaseOptions } from "../type/AccessBaseOptions";
 import { PIM_STORAGE, PREFERRED_CONSENT_MANAGEMENT_UI } from "../constants";
+import { AccessGrantError } from "../../common/errors/AccessGrantError";
 
 interface AccessManagementUiFromProfile {
   accessEndpoint?: UrlString;
@@ -48,12 +49,14 @@ async function getAccessManagementUiFromProfile(
       fetch: options.fetch,
     });
   } catch (e) {
-    throw new Error(`Cannot get the Access Management UI for ${webId}: ${e}.`);
+    throw new AccessGrantError(
+      `Cannot get the Access Management UI for ${webId}: ${e}.`,
+    );
   }
 
   const profile = getThing(webIdDocument, webId);
   if (profile === null) {
-    throw new Error(
+    throw new AccessGrantError(
       `Cannot get the Access Management UI for ${webId}: the WebID cannot be dereferenced.`,
     );
   }