I'm trying to use Firebase to auth by using email/password and found this error

Question

I/FirebaseAuth(11262): Logging in as [email protected] with empty reCAPTCHA token
W/System  (11262): Ignoring header X-Firebase-Locale because its value was null.
W/System  (11262): Ignoring header X-Firebase-Locale because its value was null.
D/FirebaseAuth(11262): Notifying id token listeners about user ( 9vxnYzLISWcna1UZUFhpg7SbdVI3 ).

and when I import my auth file, it don't use it, My import in page:

import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'email_login_test_page_util/login_textfield.dart';
import 'widget_tree.dart';
> import 'auth.dart';

I try to fix it by try to track the error code but my code isn't run.