Update app.py

app.py

@@ -67,5 +67,6 @@ with gr.Blocks() as demo:
     send_button = gr.Button("Send")
     
     send_button.click(chat_response, inputs=[user_input, state], outputs=[user_input, chatbot])
+    user_input.submit(chat_response, inputs=[user_input, state], outputs=[user_input, chatbot])
 
 demo.launch(share=True)