Fatal error: Uncaught Error: Class 'FOS\UserBundle\Model\GroupManager' not found in /home/tbadigital/eventos/vendor/friendsofsymfony/user-bundle/Doctrine/GroupManager.php:19 Stack trace: #0 {main} thrown in /home/tbadigital/eventos/vendor/friendsofsymfony/user-bundle/Doctrine/GroupManager.php on line 19