Update app.py

app.py

@@ -67,7 +67,7 @@ with gr.Blocks() as demo:
                 yield '(finished initialization, responding...)', state
                 if mode != 'Conversation':
                     yield 'waiting video input...', state
-                response, _ = gradio_backend.video_qa(query=message, state=state)
+                response, _ = gradio_backend(query=message, state=state, mode=mode)
                 yield response, {}                
                 
             def gr_chatinterface_chatbot_clear_fn():