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;" uri="" uuid="A0DFFD08-4C4E-11F1-A609-8A808F49F76F" method="post" key="login">
    <field attrs="" value="" display="Username" id="uuid-A0E031A6-4C4E-11F1-A609-8A808F49F76F" widget="text" name="username" key="username"/>
    <field display="Password" attrs="" id="uuid-A0E07A30-4C4E-11F1-A609-8A808F49F76F" widget="password" name="password" key="password"/>
    <field key="submit" widget="submit" name="submit" attrs="" value="" display="Login" id="uuid-A0E0C53A-4C4E-11F1-A609-8A808F49F76F"/>
  </form>
</response>