Fatal error: Uncaught Error: Class "Doctrine\ORM\Cache\Persister\Collection\AbstractCollectionPersister" not found in /var/www/html/API_Forum/vendor/doctrine/orm/src/Cache/Persister/Collection/ReadWriteCachedCollectionPersister.php:16 Stack trace: #0 {main} thrown in /var/www/html/API_Forum/vendor/doctrine/orm/src/Cache/Persister/Collection/ReadWriteCachedCollectionPersister.php on line 16