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="" key="login" method="post" uuid="B6BC9D94-39C9-11F1-A288-8A7E0C0019C7">
    <field id="uuid-B6BCD282-39C9-11F1-A288-8A7E0C0019C7" attrs="" display="Username" value="" key="username" name="username" widget="text"/>
    <field widget="password" name="password" attrs="" id="uuid-B6BD1F12-39C9-11F1-A288-8A7E0C0019C7" display="Password" key="password"/>
    <field name="submit" widget="submit" key="submit" value="" attrs="" id="uuid-B6BD6602-39C9-11F1-A288-8A7E0C0019C7" display="Login"/>
  </form>
</response>