Update app.py

app.py

@@ -133,4 +133,4 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     message.submit(message_and_history, inputs=[output_img, message, state, api_input], outputs=[chatbot, state])
     message.submit(lambda: None, None, message, queue=False)
             
-block.launch()
+demo.launch()