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="6F569AAC-906F-11F1-8406-65837BD1CDC2" method="post" encoding="&#x2713;" uri="">
    <field key="username" attrs="" value="" widget="text" name="username" display="Username" id="uuid-6F56CF22-906F-11F1-8406-65837BD1CDC2"/>
    <field id="uuid-6F57152C-906F-11F1-8406-65837BD1CDC2" display="Password" key="password" name="password" widget="password" attrs=""/>
    <field display="Login" id="uuid-6F575EB0-906F-11F1-8406-65837BD1CDC2" key="submit" value="" attrs="" widget="submit" name="submit"/>
  </form>
</response>