Fatal error: Uncaught Error: Class 'WP_Widget_Media' not found in /home/oho09/public_html/lekcjatestdm/wp-includes/widgets/class-wp-widget-media-audio.php:18 Stack trace: #0 {main} thrown in /home/oho09/public_html/lekcjatestdm/wp-includes/widgets/class-wp-widget-media-audio.php on line 18