title: Xcode 8 beta 5 : The operation couldn't be completed
body: <p>I'm working on <strong>Xcode 8 beta 5.</strong> While running app on iPhone SE simulator I'm getting an error that <code>The operation couldn't be completed. (Mach error - 308 - (pic/mig) server died).</code></p>
  
  <p><a href="https://i.stack.imgur.com/4rml7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4rml7.png" alt="Screenshot 1"></a></p>
  
  <p>I tried clean build, restart Xcode but didn't worked.</p>
  
  <p>Any fix?</p>