Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\FileLoader' not found in /home/app/htdocs/message_gateway/vendor/symfony/routing/Loader/XmlFileLoader.php:26 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/symfony/routing/Loader/XmlFileLoader.php on line 26