04/17 Update: fixed email ingestion ticket error 2

app/services/notification_service.py

@@ -89,14 +89,36 @@ def create_notification(user_id, notif_type, title, message, ticket_id=None, lin
             'link'      : link,
             'created_at': notif.created_at.isoformat(),
         }
+        # Emit strategy depends on whether we have a live request context:
+        #
+        # - Inside a web request → use start_background_task() so the emit
+        #   runs in eventlet's green-thread pool and does not block the WSGI
+        #   response or race with a polling->WebSocket upgrade handshake.
+        #
+        # - Outside a request context (e.g. APScheduler background job) ->
+        #   call socketio.emit() directly.  start_background_task() causes
+        #   Flask-SocketIO to invoke the on_connect handler internally, which
+        #   references current_user -- but there is no session to resolve it
+        #   from, so Flask-Login returns None and raises AttributeError.
+        #   A direct emit bypasses that handler entirely and is safe from a
+        #   background thread that already has an app context active.
+        from flask import has_request_context
+        if has_request_context():
             def _emit():
                 socketio.emit(
                     'new_notification',
                     payload,
-                to=f'user_{user_id}',   # 'to' is the modern alias for 'room'
+                    to=f'user_{user_id}',
-                namespace='/',          # explicit default namespace — avoids
+                    namespace='/',
-            )                            # ambiguity under reverse-proxy setups
+                )
             socketio.start_background_task(_emit)
+        else:
+            socketio.emit(
+                'new_notification',
+                payload,
+                to=f'user_{user_id}',
+                namespace='/',
+            )
 
     except Exception as exc:
         db.session.rollback()