Update app.py

app.py

@@ -107,7 +107,7 @@ with gr.Blocks() as demo:
         return history, session_index
     
     msg.submit(user, inputs=[msg, url_params, chatbot], outputs=[msg, chatbot], queue=False).then(
-        fn=bot, inputs=[chatbot, url_params], outputs=[chatbot]
+    fn=lambda x: bot(*x), inputs=[chatbot, url_params], outputs=[chatbot, None]
     )
 
     clear.click(lambda: None, None, chatbot, queue=False)