Fatal error: Uncaught Error: Call to undefined function add_filter() in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\購物外掛\woocommerce\includes\class-wc-brands-coupons.php:23 Stack trace: #0 D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\購物外掛\woocommerce\includes\class-wc-brands-coupons.php(191): WC_Brands_Coupons->__construct() #1 {main} thrown in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\購物外掛\woocommerce\includes\class-wc-brands-coupons.php on line 23