Fatal error: Uncaught Error: Class "Doctrine\Persistence\Event\ManagerEventArgs" not found in /home/zdpktgd/ptc/vendor.old/doctrine/orm/src/Event/OnFlushEventArgs.php:17 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/doctrine/orm/src/Event/OnFlushEventArgs.php on line 17