Notice: Undefined variable: filebird_activation_error in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\常用外掛\filebird-pro\views\particle\activation_fail.php on line 5

Fatal error: Uncaught Error: Call to undefined function apply_filters() in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\常用外掛\filebird-pro\views\particle\activation_fail.php:6 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\filebird-pro\views\particle\activation_fail.php on line 6