Fatal error: Uncaught Error: Interface 'Doctrine\ORM\Query\TreeWalker' not found in /home/xlafr0/public_html/hr.xlafricagroup.com/src/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerAdapter.php:18 Stack trace: #0 {main} thrown in /home/xlafr0/public_html/hr.xlafricagroup.com/src/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerAdapter.php on line 18