 absolute
          URL.
        </p>
</div>
<a name="N102B4"></a><a name="NullPointerException"></a>
<h5>2.6. I get an "[ERROR]: null", or a NullPointerException.<span style="float: right"><a href="#NullPointerException-menu">^</a></span>
</h5>
<div style="margin-left: 15 ; border: 2px">
<p>
          This is often caused by an invalid FO document. Currently only very
          common errors are intercepted and produce a comprehensible error
          message. If you forgot container elements like fo:page-