Added access tokens for duplicates

classes/exceptions.py

@@ -176,6 +176,20 @@ class UserAlreadyExists(Exception):
             }
         }
 
+class AccessTokenInvalidError(Exception):
+    """Raises HTTP 401 if access token is not valid."""
+    def __init__(self):
+        self.openapi = {
+            "description": "Invalid Access Token",
+            "content": {
+                "application/json": {
+                    "example": {
+                        "detail": "Invalid access token."
+                    }
+                }
+            }
+        }
+
 class UserCredentialsInvalid(Exception):
     """Raises HTTP 401 if user credentials are not valid."""
     def __init__(self):