Fatal error: Uncaught Error: Class 'Doctrine\Common\Collections\AbstractLazyCollection' not found in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/PersistentCollection.php:38 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/PersistentCollection.php on line 38