Fatal error: Uncaught Error: Class 'WP_Async_Request' not found in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\常用外掛\perfmatters\vendor\deliciousbrains\wp-background-processing\classes\wp-background-process.php:14 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\perfmatters\vendor\deliciousbrains\wp-background-processing\classes\wp-background-process.php on line 14