Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/zdpktgd/ptc/vendor.old/symfony/security-core/Event/VoteEvent.php:24 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/security-core/Event/VoteEvent.php on line 24