How to solve Firebase API initialization failure (Android + Firebase)

Question

I recently needed to use Google GCM in my project. From its website it is said:

Firebase Cloud Messaging (FCM) is the new version of GCM. It inherits

Answer 1

I had the same issue, fixed by upgrading to play-services-auth:10.0.1:

dependencies {
    ......
    //implementation 'com.google.android.gms:play-services-auth:9.0.0'
    implementation 'com.google.android.gms:play-services-auth:10.0.1'
    ....
}