Fatal error: Uncaught Error: Class "OCP\BackgroundJob\QueuedJob" not found in /var/www/html/nextcloud/apps/theming/lib/Jobs/MigrateBackgroundImages.php:25 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/theming/lib/Jobs/MigrateBackgroundImages.php on line 25