React Native cannot find variable $refresh req$

Package.JSon :-

"metro-react-native-babel-preset": "^0.56.0",

Downgrade version "metro-react-native-babel-preset": "^0.54.1",

and Delete your package-lock file and delete npm module folder

and after that

1). npm install

2). react-native link

3). react-native run-android // react-native run-ios

to Solve your issue

Happy Codding Cheers!