Firebase is not initializing

this steps should solve it

<<<<<<<<<< gradle:project >>>>>>>>>>

Change this line

classpath 'com.google.gms:google-services:4.1.0'

With this line

classpath 'com.google.gms:google-services:4.2.0'

I think there is a bug with google play services version 4.1.0

make sure to put apply plugin: 'com.google.gms.google-services' in app gradle