Fatal error: Uncaught Error: Call to undefined function add_filter() in /usr/local/www/wordpress/wp-content/plugins/.old/themehunk-customizer/shopline/demo/import-shopline-data.php:2 Stack trace: #0 {main} thrown in /usr/local/www/wordpress/wp-content/plugins/.old/themehunk-customizer/shopline/demo/import-shopline-data.php on line 2