Fatal error: Uncaught Error: Class 'WP_Widget' not found in /opt/app-root/src/wp-content/plugins/jetpack/modules/widgets/wordpress-post-widget/class.jetpack-display-posts-widget-base.php:24 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/jetpack/modules/widgets/wordpress-post-widget/class.jetpack-display-posts-widget-base.php on line 24