Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/magpolicki/public_html/magpolicki/wp-content/themes/shopper/inc/shopper-template-functions.php:12 Stack trace: #0 {main} thrown in /home/magpolicki/public_html/magpolicki/wp-content/themes/shopper/inc/shopper-template-functions.php on line 12