Fatal error: Uncaught Error: Interface "ILIAS\Setup\Migration" not found in /var/www/html/ilias/components/ILIAS/Style/Content/Setup/class.ilStyleIRSSMigration.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Style/Content/Setup/class.ilStyleIRSSMigration.php on line 25