Fatal error: Uncaught Error: Class "yii\base\Event" not found in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926955/interfaces/event/CalendarItemsEvent.php:23 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926955/interfaces/event/CalendarItemsEvent.php on line 23