If you can not build the app with Expo, and always have the error when building the app ( the app running in the expo simulator is fine, for example ).

Please open your app building log in the expo, if you see something similar like this:

The error happens when parsing google-services.json, because you use Wilcity google-services.json, not yours.

Please follow to this documentation:

How to fix push notification issue in Android app

To correct the setting, then start your build again.

Regards.