Update app.py

app.py

@@ -115,6 +115,7 @@ with gr.Blocks() as demo:
     add_button.click(fn=add_to_cart, inputs=item_name_input, outputs=menu_html)
     update_button.click(fn=update_quantity, inputs=[item_name_input, operation_input], outputs=menu_html)
 
-    demo.append(menu_html)
+    # Include menu_html in Blocks context
+    menu_html.render()
 
 demo.launch()