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="C52DAD82-9181-11F0-9323-0A3455FD9ABD" uri="" method="post" encoding="&#x2713;">
    <field id="uuid-C52DE482-9181-11F0-9323-0A3455FD9ABD" display="Username" value="" attrs="" widget="text" name="username" key="username"/>
    <field key="password" attrs="" name="password" widget="password" id="uuid-C52E2CBC-9181-11F0-9323-0A3455FD9ABD" display="Password"/>
    <field display="Login" id="uuid-C52E7668-9181-11F0-9323-0A3455FD9ABD" value="" name="submit" widget="submit" attrs="" key="submit"/>
  </form>
</response>