Fatal error: Uncaught Error: Class "WP_Widget" not found in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\modules\wordads\php\class-wordads-sidebar-widget.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\modules\wordads\php\class-wordads-sidebar-widget.php on line 13