title: "Couldn't communicate with a helper application" authenticating
body: <p>I've been trying to authenticate with my Apple Id in Xcode, but it's consistently showing the &quot;Couldn't communicate with a helper application&quot; dialog. I restarted Xcode, computer, etc. It also doesn't seem temporary as it's happening a couple of days already.</p>
  <p><a href="https://i.stack.imgur.com/IH18c.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IH18c.png" alt="enter image description here" /></a></p>
  <p>Can reproduce it with all my Xcode installations: 12 beta, 12 and 11.3.1. MacOS 11 beta. Any ideas?</p>