Fatal error: Uncaught Error: Class "ILIAS\UI\Implementation\Render\DecoratedRenderer" not found in /var/www/html/ilias/docs/development/code-examples/ui-exchange/custom-components/HelloWorldRenderer.php:30 Stack trace: #0 {main} thrown in /var/www/html/ilias/docs/development/code-examples/ui-exchange/custom-components/HelloWorldRenderer.php on line 30