Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/successforkids/public_html/wp-content/plugins/woocommerce-abandon-cart-pro/includes/class-wcap-webhooks.php:27 Stack trace: #0 /home/successforkids/public_html/wp-content/plugins/woocommerce-abandon-cart-pro/includes/class-wcap-webhooks.php(715): Wcap_Webhooks::init() #1 {main} thrown in /home/successforkids/public_html/wp-content/plugins/woocommerce-abandon-cart-pro/includes/class-wcap-webhooks.php on line 27