Fatal error: Uncaught Error: Class "Symfony\Component\Validator\ConstraintValidator" not found in /home/ntpcbgtpp/public_html/mat1/src/Validator/Constraints/UniqueObjectCollectionValidator.php:34 Stack trace: #0 {main} thrown in /home/ntpcbgtpp/public_html/mat1/src/Validator/Constraints/UniqueObjectCollectionValidator.php on line 34