Update app.py

app.py

@@ -64,6 +64,7 @@ with gr.Blocks() as demo:
         chatbot = gr.Chatbot()
         msg = gr.Textbox()
         clear = gr.ClearButton([msg, chatbot])
+        button = gr.Button([msg, chatbot])
         msg.submit(respond, [msg, chatbot], [msg, chatbot])
     with gr.Tab("ELS"):
         with gr.Row():