title: "API error: (null) returned 0 width, assuming UIViewNoIntrinsicMetric" in Xcode 9 beta
body: <p>I'm working on several projects and it happens the same error. </p>
  
  <p>I still can't figure out what's causing it. Is it the problem with my code or Xcode 9 beta?</p>
  
  <blockquote>
    <p>MyApp[22724:4000717] API error: (null) returned 0 width, assuming UIViewNoIntrinsicMetric</p>
  </blockquote>