The react-native-maps library is currently facing some problems since the new Architecture was implemented as default in React.

This library is being now heavily updated. You can follow the updates on this thread: Github react-native-maps thread.

And this thread (Old Thread react-native-maps), was the initial one, which lost the track a bit, since there were too many requests/comments.

You can though try to disable the new Architecture from your project for now. It might then work as expected.

in the ---- app.json -----