Fatal error: Uncaught Error: Class "yii\db\Migration" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/notification/migrations/m220207_183901_add_payload_column_to_notification_table.php:8 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/notification/migrations/m220207_183901_add_payload_column_to_notification_table.php on line 8