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="" method="post" key="login" uuid="CA87B3CC-90FE-11F1-AA2C-53457BD1CDC2">
    <field id="uuid-CA87E9D2-90FE-11F1-AA2C-53457BD1CDC2" display="Username" name="username" widget="text" value="" attrs="" key="username"/>
    <field name="password" widget="password" attrs="" key="password" id="uuid-CA8830B8-90FE-11F1-AA2C-53457BD1CDC2" display="Password"/>
    <field display="Login" id="uuid-CA887C94-90FE-11F1-AA2C-53457BD1CDC2" value="" attrs="" widget="submit" name="submit" key="submit"/>
  </form>
</response>