Fatal error: Uncaught Error: Class 'WP_Widget' not found in /var/www/noteswp.new/wp-content/plugins-backup/netbase_solutions/core/modules/ajax-cart/inc/widgets.php:2 Stack trace: #0 {main} thrown in /var/www/noteswp.new/wp-content/plugins-backup/netbase_solutions/core/modules/ajax-cart/inc/widgets.php on line 2