Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Constraints\FileValidator" not found in /home/marcgron/www/SSA/v2/vendor/symfony/validator/Constraints/VideoValidator.php:23 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/symfony/validator/Constraints/VideoValidator.php on line 23