Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in C:\xampp\htdocs\hannoole\PMS\vendor\symfony\config\Definition\Loader\DefinitionFileLoader.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\PMS\vendor\symfony\config\Definition\Loader\DefinitionFileLoader.php on line 27