XSLT Error

Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.

Response XML

<?xml version="1.0"?>
<response>
  <form uuid="A9EAB998-7B38-11F0-A81F-D2314E8DD072" encoding="&#x2713;" uri="" key="login" method="post">
    <field id="uuid-A9EAF156-7B38-11F0-A81F-D2314E8DD072" key="username" name="username" display="Username" attrs="" widget="text" value=""/>
    <field attrs="" display="Password" widget="password" id="uuid-A9EB3EA4-7B38-11F0-A81F-D2314E8DD072" key="password" name="password"/>
    <field id="uuid-A9EB8878-7B38-11F0-A81F-D2314E8DD072" key="submit" name="submit" display="Login" attrs="" widget="submit" value=""/>
  </form>
</response>