Fatal error: Uncaught Error: Class "humhub\libs\BasePermission" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/space/permissions/InviteUsers.php:18 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/space/permissions/InviteUsers.php on line 18