Fatal error: Uncaught Error: Class "Illuminate\Support\ServiceProvider" not found in C:\xampp\htdocs\gnu_7\g7\app\Providers\InstallerRuntimeServiceProvider.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\gnu_7\g7\app\Providers\InstallerRuntimeServiceProvider.php on line 23