Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Mapping\Loader\FileLoader" not found in /home/projetwewv/www/licence00/monapp/vendor/symfony/validator/Mapping/Loader/XmlFileLoader.php:24 Stack trace: #0 {main} thrown in /home/projetwewv/www/licence00/monapp/vendor/symfony/validator/Mapping/Loader/XmlFileLoader.php on line 24