Fatal error: Uncaught Error: Interface "Doctrine\Common\Persistence\ObjectManager" not found in /var/www/apache/dev/cal/web/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManagerInterface.php:31 Stack trace: #0 {main} thrown in /var/www/apache/dev/cal/web/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManagerInterface.php on line 31