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 uri="" encoding="&#x2713;" method="post" key="login" uuid="16020CF0-3C39-11F1-97E4-B9CCA9425785">
    <field display="Username" attrs="" name="username" value="" widget="text" key="username" id="uuid-160242CE-3C39-11F1-97E4-B9CCA9425785"/>
    <field name="password" attrs="" display="Password" key="password" widget="password" id="uuid-16028C02-3C39-11F1-97E4-B9CCA9425785"/>
    <field attrs="" display="Login" value="" name="submit" id="uuid-1602D6EE-3C39-11F1-97E4-B9CCA9425785" widget="submit" key="submit"/>
  </form>
</response>