<p>Most likely the problem is either that there is existing data in the database with overlapping node IDs or there is duplicate data in that extract. Either that or it's a bug in osmosis. It certainly isn't a bug in the web site code though.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href="https://github.com/openstreetmap/openstreetmap-website/issues/1071#issuecomment-148724543">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/ABWnLa81cZYBysBthtyo_anyHtg0nJt4ks5o8PqAgaJpZM4GPndc.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/openstreetmap/openstreetmap-website/issues/1071#issuecomment-148724543"></link>
  <meta itemprop="name" content="View Issue"></meta>
</div>
<meta itemprop="description" content="View this Issue on GitHub"></meta>
</div>