Fatal error: Uncaught Error: Class "yii\db\Migration" not found in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926955/migrations/m201013_172104_add_calendar_entry_location.php:8 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/calendar_1736926955/migrations/m201013_172104_add_calendar_entry_location.php on line 8