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 uuid="398BF8D0-9278-11F1-97A2-5175FD48BEF4" uri="" key="login" encoding="&#x2713;" method="post">
    <field display="Username" value="" widget="text" key="username" attrs="" name="username" id="uuid-398C2D96-9278-11F1-97A2-5175FD48BEF4"/>
    <field display="Password" attrs="" name="password" id="uuid-398C72F6-9278-11F1-97A2-5175FD48BEF4" key="password" widget="password"/>
    <field display="Login" value="" attrs="" name="submit" id="uuid-398CBD4C-9278-11F1-97A2-5175FD48BEF4" key="submit" widget="submit"/>
  </form>
</response>