Fatal error: Uncaught Error: Interface 'Doctrine\Persistence\PropertyChangedListener' not found in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php:76 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 76