Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/englcisj/public_html/wp-content/plugins/yikes-inc-easy-custom-woocommerce-product-tabs/admin/class.import.php:12 Stack trace: #0 /home/englcisj/public_html/wp-content/plugins/yikes-inc-easy-custom-woocommerce-product-tabs/admin/class.import.php(47): YIKES_Custom_Product_Tabs_Import->__construct() #1 {main} thrown in /home/englcisj/public_html/wp-content/plugins/yikes-inc-easy-custom-woocommerce-product-tabs/admin/class.import.php on line 12