<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Critical warnings when loading YouTube videos"
   href="https://bugs.webkit.org/show_bug.cgi?id=146999#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Critical warnings when loading YouTube videos"
   href="https://bugs.webkit.org/show_bug.cgi?id=146999">bug 146999</a>
              from <span class="vcard"><a class="email" href="mailto:pnormand&#64;igalia.com" title="Philippe Normand &lt;pnormand&#64;igalia.com&gt;"> <span class="fn">Philippe Normand</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=146999#c1">comment #1</a>)
<span class="quote">&gt; Created <span class=""><a href="attachment.cgi?id=256906" name="attach_256906" title="Backtrace">attachment 256906</a> <a href="attachment.cgi?id=256906&amp;action=edit" title="Backtrace">[details]</a></span>
&gt; Backtrace</span >

Looking at this trace it seems you don't have the autoaudiosink gst element. Can you check your gst-plugins-good jhbuild installation?

Within the JHBuild shell this should show a description of the element:

gst-inspect-1.0 autoaudiosink</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>