Fatal error: Uncaught Error: Call to undefined function add_action() in /home/regeneremoda/public_html/wp-content/plugins/woocommerce-ajax-filters/fixes/mysql_derived.php:27 Stack trace: #0 {main} thrown in /home/regeneremoda/public_html/wp-content/plugins/woocommerce-ajax-filters/fixes/mysql_derived.php on line 27