bug report:Unicorn check error occurred.

Hi, I paste the data as follow to 
 http://validator.w3.org/unicorn/#validate-by-input+task_conformance
.. and error occurred.

data begin >>>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>XHTML5マークアップの例</title>
  </head>
  <body>
    <p>このHTMLはXHTML5の文法に従って<br/>記述されています。</p>
  </body>
</html>
<<< data end

error info >>>
class org.apache.xmlbeans.XmlException
error: Unexpected character encountered (lex state 9): '"'
org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3486)
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1276)
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1263)
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:345)
org.w3.x2009.x10.unicorn.observationresponse.ObservationresponseDocument$Factory.parse(Unknown Source)
org.w3c.unicorn.response.impl.DefaultResponseXBeans.<init>(DefaultResponseXBeans.java:60)
sun.reflect.GeneratedConstructorAccessor714.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
org.w3c.unicorn.response.ResponseFactory.getResponse(ResponseFactory.java:24)
org.w3c.unicorn.request.DirectRequestPOST.doRequest(DirectRequestPOST.java:81)
org.w3c.unicorn.RequestThread.run(RequestThread.java:66)

Received on Thursday, 11 December 2014 08:30:14 UTC