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\常用外掛\contact-form-7\modules\listo.php:7 Stack trace: #0 {main} thrown in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\常用外掛\contact-form-7\modules\listo.php on line 7