title: The encryption information is unavailable. Try again. TestFlight
body: <p>The app is uploaded without errors, but when I press the install button I get this message:</p>
  
  <p><a href="https://i.stack.imgur.com/nsapq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nsapq.png" alt="enter image description here"></a></p>
  
  <p>I'm using macOS Sierra 10.12 and Xcode 8.</p>
  
  <p>This has never happened to me in old versions of Xcode. What could be wrong?</p>