title: fatal error: unexpectedly found nil while unwrapping an Optional value
body: <pre><code>var audioPath = NSURL(fileURLWithPath: Bundle.main.path(forResource: "vellipomaakey", ofType: "mp3")!).  
  </code></pre>
  
  <blockquote>
    <p>fatal error: unexpectedly found nil while unwrapping an Optional value         </p>
  </blockquote>