Fatal error: Uncaught Error: Interface 'Doctrine\ORM\Query\TreeWalker' not found in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerChain.php:17 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Query/TreeWalkerChain.php on line 17