Update app.py

app.py

@@ -576,7 +576,7 @@ async def chat_endpoint(chat_query: ChatQuery):
         # Generate response
         answer = generate_response(query_text)        
         # Translate back to Arabic if needed
-        if query.language_code == 0:
+        if language_code == 0:
             answer = translate_en_to_ar(answer)
             if not answer:
                 return Response(answer="", error="Translation failed")