I\'m new to android development, since a long time, I\'m stuck in one error that is Run your app to verify installation (Checking if the app has communicated with our servers. Y
If any one is getting like this in console :
com.google.firebase.FirebaseException: An internal error has occurred. [ API key not valid. Please pass a valid API key. ]
Just change the version of google services at project level gradle and sync your project and reinstall.
classpath 'com.google.gms:google-services:4.3.0'
This work for me I