Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/regeneremoda/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/add_classes/classes.php:4 Stack trace: #0 /home/regeneremoda/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/add_classes/classes.php(21): BeRocket_aapf_add_classes_filters->__construct() #1 {main} thrown in /home/regeneremoda/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/add_classes/classes.php on line 4