Fatal error: Uncaught Error: Class 'Doctrine\Common\Collections\Expr\ExpressionVisitor' not found in /home/app/htdocs/ninja/vendor/doctrine/collections/lib/Doctrine/Common/Collections/Expr/ClosureExpressionVisitor.php:31 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/doctrine/collections/lib/Doctrine/Common/Collections/Expr/ClosureExpressionVisitor.php on line 31