Fatal error: Uncaught Error: Class 'Doctrine\Persistence\Event\ManagerEventArgs' not found in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Event/OnClassMetadataNotFoundEventArgs.php:17 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Event/OnClassMetadataNotFoundEventArgs.php on line 17