Fatal error: Uncaught Error: Class 'WP_Widget' not found in /home2/thebackl/public_html/public_html/wp-includes/widgets/class-wp-widget-search.php:17
Stack trace:
#0 {main}
thrown in /home2/thebackl/public_html/public_html/wp-includes/widgets/class-wp-widget-search.php on line 17