我在一周前从xcode 9上传了一个版本，它没有任何问题，并成功上传到了testflight。但是我升级到Xcode 10，现在上传构建时，它开始抱怨为：
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."