Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Constraint" not found in D:\htdocs\SuiteCRM\core\backend\MediaObjects\Validator\UploadValidator\UploadConstraint.php:35 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\core\backend\MediaObjects\Validator\UploadValidator\UploadConstraint.php on line 35