Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\Loader" not found in D:\xampp\htdocs\lux_PHP\vendor\symfony\routing\Loader\AttributeServicesLoader.php:22 Stack trace: #0 {main} thrown in D:\xampp\htdocs\lux_PHP\vendor\symfony\routing\Loader\AttributeServicesLoader.php on line 22