Update app.py

app.py

@@ -157,11 +157,13 @@ def predict(_chatbot, task_history) -> tuple:
             else:
                 task_history.append((chat_query, response))
     else:
-        _chatbot[-1] = (chat_query, response)
+        text_response = response.strip()  # Ensure it's just a string
+        _chatbot[-1] = (chat_query, text_response)
         if task_history:
-            task_history[-1] = (chat_query, response)
+            task_history[-1] = (chat_query, text_response)
         else:
-            task_history.append((chat_query, response))
+            task_history.append((chat_query, text_response))
+
     return _chatbot, task_history
 
 def save_uploaded_image(image_file, upload_dir):