Fatal error: Uncaught Error: Class 'WC_Data' not found in /var/sites/c/chinapreorder.com/public_html/wp-content/plugins/yith-woocommerce-wishlist/includes/class.yith-wcwl-wishlist.php:22 Stack trace: #0 /var/sites/c/chinapreorder.com/public_html/wp-content/plugins/yith-woocommerce-wishlist/init.php(93): require_once() #1 /var/sites/c/chinapreorder.com/public_html/wp-includes/class-wp-hook.php(287): yith_wishlist_constructor('') #2 /var/sites/c/chinapreorder.com/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array) #3 /var/sites/c/chinapreorder.com/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #4 /var/sites/c/chinapreorder.com/public_html/wp-content/plugins/yith-woocommerce-wishlist/init.php(131): do_action('yith_wcwl_init') #5 /var/sites/c/chinapreorder.com/public_html/wp-includes/class-wp-hook.php(287): yith_wishlist_install('') #6 /var/sites/c/chinapreorder.com/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #7 /var/sites/c/chinapreorde in /var/sites/c/chinapreorder.com/public_html/wp-content/plugins/yith-woocommerce-wishlist/includes/class.yith-wcwl-wishlist.php on line 22