Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Exception\ValidatorException" not found in /var/www/html/API_Forum/vendor/symfony/validator/Exception/ConstraintDefinitionException.php:14 Stack trace: #0 {main} thrown in /var/www/html/API_Forum/vendor/symfony/validator/Exception/ConstraintDefinitionException.php on line 14