Fatal error: Uncaught Error: Class 'Doctrine\Common\Collections\AbstractLazyCollection' not found in C:\Apache24\htdocs\cwlms\vendor\doctrine\orm\lib\Doctrine\ORM\PersistentCollection.php:45 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwlms\vendor\doctrine\orm\lib\Doctrine\ORM\PersistentCollection.php on line 45