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 encoding="&#x2713;" key="login" uuid="385721E2-3EFE-11F1-8CD7-D6E47F2D798A" uri="" method="post">
    <field display="Username" key="username" widget="text" value="" id="uuid-38575E50-3EFE-11F1-8CD7-D6E47F2D798A" attrs="" name="username"/>
    <field name="password" attrs="" id="uuid-3857AD4C-3EFE-11F1-8CD7-D6E47F2D798A" widget="password" key="password" display="Password"/>
    <field key="submit" display="Login" id="uuid-3857FE32-3EFE-11F1-8CD7-D6E47F2D798A" value="" attrs="" widget="submit" name="submit"/>
  </form>
</response>