The operation couldn’t be completed. Unable to log in with account '594484226@qq.com'.
An unexpected failure occurred while logging in (Underlying error code -1005).
解决办法：我点击导航栏“Xcode”->"Preferences" -> "Accounts"，where it turned out my Apple ID had timed-out. After logging-in there, and then restarting Xcode, my profile was automatically "repaired", and all is now well.开始我是重新登录账号，但是登录不进，后来我就把Xcode退出，重新打开Xcode就好了 。
注：不喜勿喷！！！
