Hello,
we have tested it.
But the problem is, that you (or someone) else has added nonsense testing data.
In the PDF staritng note text, you have now
<p>
upper area sample text</p>
<p>
</p>
<p>
upper area sample text</p>
<p>
</p>
<p>
upper area sample text</p>
<p>
</p>
<p>
</p>
<p>
upper area sample text</p>
<p>
<span class="smarterwiki-popup-bubble smarterwiki-popup-bubble-active" style="top: 201px; left: 134px; margin-left: -51px; margin-top: -57px; opacity: 0.25;"><span class="smarterwiki-popup-bubble-body"><span class="smarterwiki-popup-bubble-links-container"><span class="smarterwiki-popup-bubble-links smarterwiki-clearfix"><span class="smarterwiki-popup-bubble-links-row smarterwiki-clearfix"><a class="smarterwiki-popup-bubble-link" href="http://search.surfcanyon.com/search?f=nrl1&q=%20area%20sample%20text&partner=fastestfox" target="_blank" title="Search Surf Canyon"><img alt="" class="smarterwiki-popup-bubble-link-favicon" src="http://surfcanyon.com/favicon.ico" /></a><a class="smarterwiki-popup-bubble-link" href="http://www.google.com/search?q=%20area%20sample%20text" target="_blank" title="Search Google"><img alt="" class="smarterwiki-popup-bubble-link-favicon" src="http://www.google.com/favicon.ico" /></a></span><span class="smarterwiki-popup-bubble-links-row smarterwiki-clearfix"><a class="smarterwiki-popup-bubble-link" href="http://api3.smarterfox.com/wikisearch/search?q=%20area%20sample%20text&locale=en-US" target="_blank" title="Search Wikipedia"><img alt="" class="smarterwiki-popup-bubble-link-favicon" src="http://static.smarterfox.com/media/wiki-favicon-sharpened.png" /></a><a class="smarterwiki-popup-bubble-link" href="http://duckduckgo.com/?q=%20area%20sample%20text" target="_blank" title="Search DuckDuckGo"><img alt="" class="smarterwiki-popup-bubble-link-favicon" src="http://ff.duckduckgo.com/favicon.ico" /></a></span></span></span></span></span></p>
and that is where the error is being generated at.
Obviously, the code there is absolute nonsense.
Before this testing code was added, it was working just fine.
So solution is easy, just remove this mess and put there a real data. We will delete it now to make it work.