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 key="login" method="post" uri="" uuid="81849A46-2FF6-11F1-97AC-FC45C27BCFD7" encoding="&#x2713;">
    <field id="uuid-8184C304-2FF6-11F1-97AC-FC45C27BCFD7" display="Username" widget="text" name="username" value="" key="username" attrs=""/>
    <field id="uuid-81850A9E-2FF6-11F1-97AC-FC45C27BCFD7" display="Password" name="password" widget="password" attrs="" key="password"/>
    <field value="" key="submit" attrs="" display="Login" id="uuid-81855666-2FF6-11F1-97AC-FC45C27BCFD7" widget="submit" name="submit"/>
  </form>
</response>