Fatal error: Uncaught Error: Call to undefined function add_action() in /home/worx/public_html/domains/worxgroup.net/public_html/wp-content/plugins/woocommerce-gravityforms-product-addons/gravityforms-product-addons-ajax.php:3 Stack trace: #0 {main} thrown in /home/worx/public_html/domains/worxgroup.net/public_html/wp-content/plugins/woocommerce-gravityforms-product-addons/gravityforms-product-addons-ajax.php on line 3