title: AVD_loader.cpp: failed to get a service for display 4
body: <p>I am trying to play audio through a <em>WebView</em> built which is built in Swift. Upon playing the audio, sometimes it will play out and other times it'll play for ~2 seconds and stop. I then get an error in the Xcode log:</p>
  
  <pre><code>/Library/Caches/com.apple.xbs/Sources/AppleGVA/AppleGVA-9.1.6.1/Sources/Slices/Driver/AVD_loader.cpp: failed to get a service for display 4 
  </code></pre>