Fatal error: Uncaught Error: Class 'FOS\UserBundle\Model\GroupManager' not found in /home/almasai/www/people/_old_site/vendor/bundles/FOS/UserBundle/Document/GroupManager.php:18 Stack trace: #0 {main} thrown in /home/almasai/www/people/_old_site/vendor/bundles/FOS/UserBundle/Document/GroupManager.php on line 18