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="F373CC70-A27B-11F0-B9E3-30FE2F49FC8C" encoding="&#x2713;" method="post" uri="" key="login">
    <field display="Username" value="" widget="text" name="username" attrs="" key="username" id="uuid-F373FFBA-A27B-11F0-B9E3-30FE2F49FC8C"/>
    <field id="uuid-F3744484-A27B-11F0-B9E3-30FE2F49FC8C" key="password" name="password" attrs="" widget="password" display="Password"/>
    <field widget="submit" display="Login" value="" key="submit" id="uuid-F3748DD6-A27B-11F0-B9E3-30FE2F49FC8C" attrs="" name="submit"/>
  </form>
</response>