Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Loader\FileLoader" not found in C:\xampp\htdocs\hannoole\PMS\vendor\symfony\dependency-injection\Loader\PhpFileLoader.php:34 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\PMS\vendor\symfony\dependency-injection\Loader\PhpFileLoader.php on line 34