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" uuid="84A54572-413F-11F1-8D6C-85ACC27BCFD7" method="post" encoding="&#x2713;" uri="">
    <field display="Username" key="username" id="uuid-84A5B9DA-413F-11F1-8D6C-85ACC27BCFD7" value="" widget="text" attrs="" name="username"/>
    <field widget="password" name="password" attrs="" display="Password" key="password" id="uuid-84A60084-413F-11F1-8D6C-85ACC27BCFD7"/>
    <field widget="submit" value="" attrs="" name="submit" key="submit" display="Login" id="uuid-84A64404-413F-11F1-8D6C-85ACC27BCFD7"/>
  </form>
</response>