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="1247918A-D116-11F1-968D-189C738CD348" key="login" encoding="&#x2713;" uri="">
    <field value="" widget="text" name="username" key="username" display="Username" attrs="" extra="" id="uuid-1247C362-D116-11F1-968D-189C738CD348"/>
    <field widget="password" display="Password" attrs="" name="password" id="uuid-12480DA4-D116-11F1-968D-189C738CD348" extra="" key="password"/>
    <field display="Login" attrs="" extra="" id="uuid-124857A0-D116-11F1-968D-189C738CD348" value="" widget="submit" name="submit" key="submit"/>
  </form>
</response>