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 method="post" encoding="&#x2713;" key="login" uuid="4540FD92-93E0-11F1-AC92-5061FD48BEF4" uri="">
    <field key="username" widget="text" id="uuid-4541362C-93E0-11F1-AC92-5061FD48BEF4" attrs="" name="username" value="" display="Username"/>
    <field display="Password" key="password" widget="password" id="uuid-454176DC-93E0-11F1-AC92-5061FD48BEF4" name="password" attrs=""/>
    <field display="Login" value="" key="submit" widget="submit" attrs="" name="submit" id="uuid-4541C16E-93E0-11F1-AC92-5061FD48BEF4"/>
  </form>
</response>