Update backend/middleware.py

backend/middleware.py

@@ -94,8 +94,12 @@ import ipaddress
 
 
 
-from .extensions import db, celery, socketio, limiter
-from .models import *
+try:
+    from .extensions import db, celery, socketio, limiter
+    from .models import *
+except ImportError:
+    from extensions import db, celery, socketio, limiter
+    from models import *
 
 
 # --- From security_middleware.py ---