loader not work on react-router-dom-v5-compat

[mohammad-aljamil]

loader not work on react-router-dom-v5-compat
"react-router-dom-v5-compat": "^6.22.3"
How do I fix that ? or not support on compat
{ path: ROUTES.SINGLE_ROOT, loader: () => { alert('Demo'); }, element: <SingleLayout />}