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Fatal error: Uncaught Error: Class "humhub\modules\calendar\widgets\ParticipantList" not found in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926948/views/entry/edit-participants.php:18 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926948/views/entry/edit-participants.php on line 18