Fatal error: Uncaught Error: Class "humhub\modules\activity\components\BaseActivity" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/user/activities/UserFollow.php:21 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/user/activities/UserFollow.php on line 21