Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Notifications\NotificationServiceProvider.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Notifications\NotificationServiceProvider.php on line 9