Fatal error: Uncaught Error: Interface 'Symfony\Component\Security\Core\User\UserInterface' not found in /home/users/00/3c/21/home/www/vendor/kimai/user-bundle/Model/UserInterface.php:17 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/kimai/user-bundle/Model/UserInterface.php on line 17