Fatal error: Uncaught Error: Class 'Doctrine\ORM\Persisters\AbstractEntityInheritancePersister' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/SingleTablePersister.php:35 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/SingleTablePersister.php on line 35