Fatal error: Uncaught Error: Class "yii\base\Model" not found in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1742577949/models/CalendarEntryDummy.php:45 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1742577949/models/CalendarEntryDummy.php on line 45