Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\FileLoader' not found in C:\xampp\htdocs\plugins\Symfony\Component\Routing\Loader\PhpFileLoader.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\plugins\Symfony\Component\Routing\Loader\PhpFileLoader.php on line 28