These credentials do not match our records

I have a login page that has been created by php artisan make:auth

it always show These credentials do not match our records. login error

my model

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use Illuminate\Auth\Authenticatable as AuthenticableTrait;
use Illuminate\Foundation\Auth\User as Authenticatable;


class user extends Authenticatable
{
    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'users';

    /**
    * The database primary key value.
    *
    * @var string
    */
    protected $primaryKey = 'id';

    /**
     * Attributes that should be mass-assignable.
     *
     * @var array
     */
    protected $fillable = ['firstName', 'lastName', 'userName', 'email', 'phoneNumber', 'password', 'type_id'];

    
}

loginController

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/home';

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest', ['except' => 'logout']);
    }

    

}

I don't know that is wrong.