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 encoding="&#x2713;" key="login" uuid="5F6DB61A-79FA-11F1-B289-74DAF8248A5F" uri="" method="post">
    <field key="username" display="Username" value="" widget="text" attrs="" name="username" id="uuid-5F6DEA22-79FA-11F1-B289-74DAF8248A5F"/>
    <field display="Password" key="password" name="password" id="uuid-5F6E2E4C-79FA-11F1-B289-74DAF8248A5F" attrs="" widget="password"/>
    <field widget="submit" value="" id="uuid-5F6E750A-79FA-11F1-B289-74DAF8248A5F" name="submit" attrs="" key="submit" display="Login"/>
  </form>
</response>