Make expired token error message more useful (#1851)

* Make expired token error message more useful

CHANGELOG.md

@@ -15,6 +15,7 @@
 - Fix issue where `PATCH /api/v1/users[user_id]` returned a list instead of a dict
 - Fix exception that occured on demoting admins through `PATCH /api/v1/users[user_id]`
 - Add `team_id` to `GET /api/v1/users` to determine if a user is already in a team
+- Provide a more useful error message when using an expired token
 
 **Themes**
 

CTFd/utils/initialization/__init__.py

@@ -267,7 +267,7 @@ def init_request_processors(app):
             except UserNotFoundException:
                 abort(401)
             except UserTokenExpiredException:
-                abort(401)
+                abort(401, description="Your access token has expired")
             except Exception:
                 abort(401)
             else: