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;" method="post" key="login" uri="" uuid="524984E0-751F-11F0-B9FD-A56D62E0087B">
    <field attrs="" display="Username" value="" id="uuid-5249B938-751F-11F0-B9FD-A56D62E0087B" key="username" widget="text" name="username"/>
    <field widget="password" key="password" name="password" display="Password" attrs="" id="uuid-5249FD30-751F-11F0-B9FD-A56D62E0087B"/>
    <field attrs="" display="Login" id="uuid-524A4542-751F-11F0-B9FD-A56D62E0087B" value="" key="submit" widget="submit" name="submit"/>
  </form>
</response>