Fatal error: Uncaught Error: Class 'Doctrine\ORM\Persisters\Collection\AbstractCollectionPersister' not found in /home/devilinf/maitres-couvreurs.fr/web_pool/marne-vitry-le-francois/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Collection/ManyToManyPersister.php:28 Stack trace: #0 {main} thrown in /home/devilinf/maitres-couvreurs.fr/web_pool/marne-vitry-le-francois/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Collection/ManyToManyPersister.php on line 28