Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Exception\ValidatorException' not found in /home/devmecseminars/public_html/mec/vendor/symfony/validator/Exception/UnexpectedTypeException.php:14 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/validator/Exception/UnexpectedTypeException.php on line 14