ios - 错误：从 xcode 9 升级到 xcode 10.1 后

Question

我在一周前从 xcode 9 上传了一个构建，它没有任何问题，并成功上传到 testflight。但是我升级到 Xcode 10 ，现在当我上传构建时，它开始抱怨：

 ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS 
    '${appSDKVersion}' SDK. All iOS apps submitted to the App Store must be built 
    with the iOS '11.0' SDK or later, included in Xcode [9.0] or later. Please 
    update Xcode and rebuild your app."