title: unexpectedly found nil while unwrapping an Optional value (lldb) AVAudioPlayer
body: <p>I don't know how to fix the "nil" that this error message is telling me.</p>
  
  <p>My code:</p>
  
  <pre><code>var error:NSError?
  self.player = AVAudioPlayer(contentsOfURL: NSURL( string:"http://192.168.0.101:3000/output.mp3" ), error: &amp;error)
  </code></pre>
  
  <p>I get the message:</p>
  
  <p><code>fatal error: unexpectedly found nil while unwrapping an Optional value
  (lldb)</code></p>