Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/pac84520/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/custom_sidebar/sidebar_include.php:4 Stack trace: #0 /home/pac84520/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/custom_sidebar/sidebar_include.php(428): BeRocket_AAPF_custom_sidebar->__construct() #1 {main} thrown in /home/pac84520/public_html/wp-content/plugins/woocommerce-ajax-filters/addons/custom_sidebar/sidebar_include.php on line 4