Fatal error: Uncaught Error: Class 'Doctrine\ORM\Query\Expr\Base' not found in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Query/Expr/GroupBy.php:12 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/Query/Expr/GroupBy.php on line 12