tidy-html5/regression_testing/cases/legacy-cases/case-443362@1.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>[ #443362 ] null-pointer except. for doctype in pre</title>
</head>
<body>
<h1>Unofficial W3C Validator FAQ</h1>
<p>This is a list of frequently asked questions and answers asked on the
<a href="http://lists.w3.org/Archive/Public/www-validator-css/"
title="Mailing list archive">www-validator-css@w3.org mailing list</a>.
<h2>
What does "<code>org.xml.sax.SAXException:
Please, fix your system identifier (URI) in the DOCTYPE rule.</code>" mean?
</h2>
<p>Your XHTML document contains a document type
declaration but the system identifier points at some
non-W3C URI. Your document probably contains something
like this:
</p>
<pre>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
</pre>
</body>
</html>