android - FirebaseAuth.getInstance() is null

Question

I updated com.google.firebase:firebase-core:16.0.7 and com.google.firebase:firebase-auth:16.1.0 but I didn't changed anything in my code and now FirebaseAuth.getInstance() is null.

java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.firebase.auth.FirebaseUser com.google.firebase.auth.FirebaseAuth.getCurrentUser()' on a null object reference

I want to check if the user is signed in or not with FirebaseAuth.getInstance().getCurrentUser()

And I get these errors while Gradle sync(but it was completed successfully):

Answer 1

Waitting for answers