Update app.py

app.py

@@ -440,7 +440,7 @@ def gradio_ask(user_message, chatbot, chat_state, gr_img, img_list, upload_flag,
             replace_flag = 0
             chatbot = []
         img_list = []
-        llm_message, img_list = chat.upload_img(gr_img, chat_state, img_list)
+        llm_message = chat.upload_img(gr_img, chat_state, img_list)
         upload_flag = 0
 
     chat.ask(user_message, chat_state)
@@ -470,7 +470,7 @@ def gradio_answer(chatbot, chat_state, img_list, temperature):
 def gradio_stream_answer(chatbot, chat_state, img_list, temperature):
     if len(img_list) > 0:
         if not isinstance(img_list[0], torch.Tensor):
-            img_list = chat.encode_img(img_list)
+            chat.encode_img(img_list)
     streamer = chat.stream_answer(conv=chat_state,
                                   img_list=img_list,
                                   temperature=temperature,