Fatal error: Uncaught Error: Call to undefined function add_action() in /home/successforkids/public_html/wp-content/plugins/wc-cart-pdf-quote/wc-cart-pdf-compatibility.php:18 Stack trace: #0 {main} thrown in /home/successforkids/public_html/wp-content/plugins/wc-cart-pdf-quote/wc-cart-pdf-compatibility.php on line 18