When I am trying to sign up a user using Firebase authentication method in my Android application, this is happening:

It's not registering a user This is the Registration code
final String _name = txtName.getText().toString().trim();
String _email = txtEmail.getText().toString().trim();
String _pass = txtPass.getText().toString().trim();
if(!TextUtils.isEmpty(_name) && !TextUtils.isEmpty(_email) && !TextUtils.isEmpty(_pass) ) {
    mProgress.setMessage("Registrando ...");
    mProgress.show();
    firAuth.createUserWithEmailAndPassword(_email, _pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if(task.isSuccessful()) {
               //the user has been registered
            }
        }
    });
 
     
     
    