Fatal error: Uncaught Error: Interface "Doctrine\ORM\Query\TreeWalker" not found in /home/projetwewv/www/licence00/symfony/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerChain.php:30 Stack trace: #0 {main} thrown in /home/projetwewv/www/licence00/symfony/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerChain.php on line 30