Class UpdateHelper\ComposerPlugin contains 2 abstract methods and must 。。。

• 问题在composer报出的问题

Class UpdateHelper\ComposerPlugin contains 2 abstract methods and must therefore be declared abstract or implement the remaining methods (Composer\Plugin\PluginInterface::deactivate, Composer\Plugin\PluginInterface::uninstall) in D:\wamp\www\hwwms\vendor\kyleka
tarnls\update-helper\src\UpdateHelper\ComposerPlugin.php on line 11

• 在vendor文件找到kylekatarnls并删除文件夹，重新执行生成

composer require kylekatarnls/update-helper:"^1.2.1"

在执行我们所需要的拓展包，这时候已经成功执行