Update app.py

app.py

@@ -220,13 +220,13 @@ def _launch_demo(args):
                 temperature=0.7,
                 top_p=1.0,
             )
+        response_text = []
         for response in responses:
             response = response.choices[0].delta.content
             response_text = []
             for ele in response:
                 response_text.append(ele)
-            response_text = ''.join(response_text)
-            _chatbot[-1] = (_parse_text(chat_query), _remove_image_special(response_text))
+            _chatbot[-1] = (_parse_text(chat_query), _remove_image_special(''.join(response_text)))
             yield _chatbot
 
         # if len(response) > 1: