Fatal error: Uncaught Error: Class 'WP_Widget' not found in /var/www/Nielsen/public_html/wp-content/plugins/jetpack/modules/widgets/milestone/class-milestone-widget.php:13 Stack trace: #0 {main} thrown in /var/www/Nielsen/public_html/wp-content/plugins/jetpack/modules/widgets/milestone/class-milestone-widget.php on line 13