Fatal error: Uncaught Error: Call to undefined function add_action() in /home/ykraanet/public_html/wp-content/plugins/woocommerce-abandoned-cart/includes/wcal_class-guest.php:21 Stack trace: #0 /home/ykraanet/public_html/wp-content/plugins/woocommerce-abandoned-cart/includes/wcal_class-guest.php(280): woocommerce_guest_ac->__construct() #1 /home/ykraanet/public_html/wp-content/plugins/woocommerce-abandoned-cart/woocommerce-ac.php(20): require_once('/home/ykraanet/...') #2 {main} thrown in /home/ykraanet/public_html/wp-content/plugins/woocommerce-abandoned-cart/includes/wcal_class-guest.php on line 21