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="" key="login" encoding="&#x2713;" uuid="8F9AA62A-2C45-11F1-941D-2282A9425785" method="post">
    <field key="username" display="Username" name="username" attrs="" value="" id="uuid-8F9AD6A4-2C45-11F1-941D-2282A9425785" widget="text"/>
    <field id="uuid-8F9B1D12-2C45-11F1-941D-2282A9425785" attrs="" widget="password" key="password" name="password" display="Password"/>
    <field key="submit" name="submit" display="Login" attrs="" value="" id="uuid-8F9B677C-2C45-11F1-941D-2282A9425785" widget="submit"/>
  </form>
</response>