Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/ravamerica/parts.ravamerica.com/wp-content/plugins/woo-rfq-for-woocommerce/woo-rfq-includes/woo-rfq-functions.php:67 Stack trace: #0 {main} thrown in /home/ravamerica/parts.ravamerica.com/wp-content/plugins/woo-rfq-for-woocommerce/woo-rfq-includes/woo-rfq-functions.php on line 67