Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Constraints\AbstractComparison" not found in /home/zdpktgd/ptc/vendor.old/symfony/validator/Constraints/NotIdenticalTo.php:19 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/validator/Constraints/NotIdenticalTo.php on line 19