Fatal error: Uncaught Error: Interface "FOS\UserBundle\Model\GroupInterface" not found in C:\xampp\htdocs\BK\bateriasec\vendor\friendsofsymfony\user-bundle\Model\Group.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\BK\bateriasec\vendor\friendsofsymfony\user-bundle\Model\Group.php on line 19