Fatal error: Uncaught Error: Class 'WP_Widget' not found in /home/oho09/public_html/lekcjatestdm/wp-includes/widgets/class-wp-widget-links.php:17
Stack trace:
#0 {main}
thrown in /home/oho09/public_html/lekcjatestdm/wp-includes/widgets/class-wp-widget-links.php on line 17