Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Routing\RoutingServiceProvider.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Routing\RoutingServiceProvider.php on line 17