Fatal error: Uncaught Error: Call to undefined function add_action() in /home/shineqat/public_html/wp-content/plugins/dvin-wcql-5/product_cat_metabox.php:24 Stack trace: #0 {main} thrown in /home/shineqat/public_html/wp-content/plugins/dvin-wcql-5/product_cat_metabox.php on line 24