Fatal error: Uncaught Error: Interface 'Composer\Plugin\PluginInterface' not found in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\購物外掛\woocommerce\vendor\composer\installers\src\Composer\Installers\Plugin.php:9 Stack trace: #0 {main} thrown in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\購物外掛\woocommerce\vendor\composer\installers\src\Composer\Installers\Plugin.php on line 9