Call to undefined method Illuminate\Auth\GenericUser::hasRole()

I tried to implement multiple roles user login, but for some reason, the function hasRole() in my User model is undefined

LoginController.php

public function authenticate(Request $request): RedirectResponse
    {
        $credentials = $request->validate([
            'email' => ['required', 'email'],
            'password' => ['required']
        ]);

        if (Auth::attempt($credentials)) {
            $request->session()->regenerate();

            $user = Auth::user();
            if ($user->hasRole('admin')) {
                return view('admin.dashboard');
            }

            return redirect()->intended('/user/dashboard');
        }

        return back()->withErrors([
            'email' => 'The provided credentials do not match our records.',
        ])->onlyInput('email');
    }

auth.php

'providers' => [
        'users' => [
            'driver' => 'eloquent',
            'model' => env('AUTH_MODEL', App\Models\User::class),
            'table' => 'users',
        ],

        // 'users' => [
        //     // 'driver' => 'database',
        //     'driver' => 'eloquent',
        //     'table' => 'users',
        // ],
    ],

App\Models\User.php

<?php

namespace App\Models;

// use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use App\Models\Role;

class User extends Authenticatable
{
    use HasFactory, Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name',
        'email',
        'password',
    ];

    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<int, string>
     */
    protected $hidden = [
        'password',
        'remember_token',
    ];

    /**
     * Connect to roles table
     */
    public function roles() {
        return $this->belongsToMany(Role::class);
    }

    /**
     * Check if user has role
     */
    public function hasRole($role) {
        return $this->roles()->where('name', $role)->exists();
    }

    /**
     * Get the attributes that should be cast.
     *
     * @return array<string, string>
     */
    protected function casts(): array
    {
        return [
            'email_verified_at' => 'datetime',
            'password' => 'hashed',
        ];
    }
}

and App\Models\Role.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Role extends Model
{
    use HasFactory;

    /**
     * Connect to user table
     */
    public function users() {
        return $this->belongsToMany(User::class);
    }
}