Fatal error: Uncaught Error: Call to undefined function add_action() in /home/kkjewellery/public_html/kkjewellery/wp-content/plugins/woo-inpost/classes/shipping/class-easypack-checkout-validator-service.php:12 Stack trace: #0 /home/kkjewellery/public_html/kkjewellery/wp-content/plugins/woo-inpost/classes/shipping/class-easypack-checkout-validator-service.php(113): Easypack_checkout_validator->__construct() #1 {main} thrown in /home/kkjewellery/public_html/kkjewellery/wp-content/plugins/woo-inpost/classes/shipping/class-easypack-checkout-validator-service.php on line 12