Не проходит регистрация в FireBase

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_email_password);
    mAuth = FirebaseAuth.getInstance();
    mAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null){
            }
            else {
            }
        }
    };
    ETemail = (EditText) findViewById(R.id.et_email);
    ETpassword = (EditText) findViewById(R.id.et_password);
    findViewById(R.id.bt_sign_in).setOnClickListener(this);
    findViewById(R.id.bt_registration).setOnClickListener(this);
}
@Override
public void onClick(View view) {
    if (view.getId() == R.id.bt_sign_in){
        signin("us1@gmail.com","12345678");
        //signin(ETemail.getText().toString(), ETpassword.getText().toString());
    }
    else if (view.getId() == R.id.bt_registration){
        registration("us1@gmail.com","12345678");
        //registration(ETemail.getText().toString(), ETpassword.getText().toString());
    }
}
public void registration (String email, String password){
    mAuth.createUserWithEmailAndPassword(email,password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if (task.isSuccessful()){
                Toast.makeText(EmailPasswordActivity.this,"Регистрация успешна",Toast.LENGTH_SHORT).show();
            }
            else{
                Toast.makeText(EmailPasswordActivity.this,"Регистрация провалена",Toast.LENGTH_SHORT).show();
            }
        }
    });
}

Связь с Firebase:

Connect your app to Firebase: connected

Add Firebase Authentication...: Dependencies set up correctly

При попытке регистрации следующие ошибки:

06-15 10:32:28.381 11335-11335/com.example.tug.cloudtasks E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.tug.cloudtasks, PID: 11335
java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.android.gms.common.api.GoogleApi.zzb(com.google.android.gms.common.api.internal.zzdf)' on a null object reference
    at com.google.android.gms.internal.zzdtp.zzb(Unknown Source:4)
    at com.google.android.gms.internal.zzdtw.zza(Unknown Source:19)
    at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(Unknown Source:15)
    at com.example.tug.cloudtasks.EmailPasswordActivity.registration(EmailPasswordActivity.java:75)
    at com.example.tug.cloudtasks.EmailPasswordActivity.onClick(EmailPasswordActivity.java:55)
    at android.view.View.performClick(View.java:6256)
    at android.view.View$PerformClick.run(View.java:24697)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)