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