Fatal error: Uncaught Error: Interface "Doctrine\ORM\Persisters\Collection\CollectionPersister" not found in /home/irishdeedsindex/public_html/blog/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Collection/AbstractCollectionPersister.php:31 Stack trace: #0 {main} thrown in /home/irishdeedsindex/public_html/blog/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Collection/AbstractCollectionPersister.php on line 31