PHP:
Fatal error: Uncaught Error: Class "WP_Widget_Media" not found in /www/habi.gna.ch/doc/wp-includes/widgets/class-wp-widget-media-audio.php:18 Stack trace: #0 {main} thrown in /www/habi.gna.ch/doc/wp-includes/widgets/class-wp-widget-media-audio.php on line 18