Fatal error: Uncaught Error: Interface "ilContentPageObjectConstants" not found in /var/www/html/ilias/components/ILIAS/ContentPage/classes/PageMetrics/PageMetricsService.php:37 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/ContentPage/classes/PageMetrics/PageMetricsService.php on line 37