Fatal error: Uncaught Error: Class "WP_Widget" not found in /home/.sites/29/site1583/web/wp-includes/widgets/class-wp-widget-recent-posts.php:17
Stack trace:
#0 {main}
  thrown in /home/.sites/29/site1583/web/wp-includes/widgets/class-wp-widget-recent-posts.php on line 17