Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Constraint" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\doctrine-bridge\Validator\Constraints\UniqueEntity.php:25 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\doctrine-bridge\Validator\Constraints\UniqueEntity.php on line 25