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" uri="" method="post" uuid="341C9C1C-8A6A-11F1-8EF3-486B400CC38E" encoding="&#x2713;">
    <field attrs="" key="username" display="Username" widget="text" value="" name="username" id="uuid-341CD1E6-8A6A-11F1-8EF3-486B400CC38E"/>
    <field display="Password" widget="password" name="password" id="uuid-341D1CF0-8A6A-11F1-8EF3-486B400CC38E" attrs="" key="password"/>
    <field attrs="" key="submit" widget="submit" display="Login" value="" name="submit" id="uuid-341D6728-8A6A-11F1-8EF3-486B400CC38E"/>
  </form>
</response>