title: Error when running Xcode simulator - '[framework] CUIThemeStore: No theme registered with id=0'
body: <p>I am developing an app with a single view and some labels. The app fails at the viewdidload() func and does not proceed further. The code is listed below.</p>
  
  <pre><code>override func viewDidLoad() {
      super.viewDidLoad()
  
      locationManager.delegate = self
      locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters
      locationManager.requestWhenInUseAuthorization()
      locationManager.startUpdatingLocation()
  
  }
  </code></pre>
  
  <p>The error is <strong>'[framework] CUIThemeStore: No theme registered with id=0'</strong></p>
  
  <p>I am not using any themes or external frameworks in my code. I am running Xcode 10 on MacOS Mojave. I checked the setting in Xcode to see if it is referring to any external frameworks and I could not find any. Any help is very much appreciated.</p>