[Lab] no-code example cannot start in codesandbox

[smeng9]

Hi, It was nice there are new packages to make a try. 🚀

However when I run the no-code example in codesandbox, it is always showing a white screen.
I am not sure if there are some config files not set up correctly

What you were expecting:

The demo should run successfully

What happened instead:

The demo cannot start

Steps to reproduce:

https://codesandbox.io/s/github/marmelab/react-admin/tree/master/examples/no-code

Related code:

Environment

• React-admin version: 3.17
• Last version that did not exhibit the issue (if applicable): N/A
• React version: 17.0.2
• Browser: Edge 91
• Stack trace (in case of a JS error):

[djhi]

Thanks for the report! Can you open a PR to fix it too?