I am upgrading my project to Laravel 9. However, when I tried to run `php artisan`, I got an error message.

> 
> In Auth.php line 60: To use the Auth::routes() method, please install
> the laravel/ui package.
> 
> 
> 

So I install the package, but I still get the same error message.
What might be the problem, and how can I fix it?