Fix app.py

app.py

@@ -51,6 +51,6 @@ with gr.Blocks(theme=theme) as demo:
             with gr.Row():
                 txt = gr.Textbox(show_label=False, placeholder='Send a message...', container=False)
 
-    txt.submit(chat, [txt, chatbot], [txt, chatbot])
+    txt.submit(chat, [txt, chatbot, model], [txt, chatbot])
 
 demo.launch(debug=True, share=True)