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 method="post" uuid="8EB38E54-7C62-11F0-94DE-5C344E8DD072" uri="" encoding="&#x2713;" key="login">
    <field display="Username" id="uuid-8EB3C1C6-7C62-11F0-94DE-5C344E8DD072" attrs="" name="username" value="" key="username" widget="text"/>
    <field display="Password" id="uuid-8EB40AC8-7C62-11F0-94DE-5C344E8DD072" attrs="" name="password" key="password" widget="password"/>
    <field attrs="" name="submit" display="Login" id="uuid-8EB4526C-7C62-11F0-94DE-5C344E8DD072" widget="submit" value="" key="submit"/>
  </form>
</response>