title: Warning: "Could not get traitsetID for iPhone11,6" (Assets.xcassets)
body: <p>I'm getting this warning all the time when running an Xcode 10 app to the XS Max physical device:</p>
  
  <p><em>Could not get traitsetID for iPhone11,6</em> (Assets.xcassets)</p>
  
  <p>Any idea what this is about and how to fix it?</p>