iPhone自动化需要使用WDA。经过一段时间，再次编译，会出现WDA编译失败的问题，提示
The operation couldn’t be completed. Unable to log in with account '123456@qq.com'. The login details for account '123456@qq.com' were rejected.
这是由于账号登陆失效造成的，只要重新登陆即可
Xcode-preference-Accounts