Fatal error: Uncaught Error: Class "Doctrine\ORM\Persisters\AbstractEntityInheritancePersister" not found in /var/www/apache/dev/cal/web/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/SingleTablePersister.php:35 Stack trace: #0 {main} thrown in /var/www/apache/dev/cal/web/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/SingleTablePersister.php on line 35