Fatal error: Uncaught Error: Class 'Doctrine\ORM\Query\TreeWalkerAdapter' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php:36 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php on line 36