Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Exception\ValidatorException" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\validator\Exception\MappingException.php:14 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\validator\Exception\MappingException.php on line 14