Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\FileLoader' not found in /opt/lampp/htdocs/kuesioner/vendor/symfony/routing/Loader/YamlFileLoader.php:29 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/symfony/routing/Loader/YamlFileLoader.php on line 29