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 uri="" key="login" method="post" encoding="&#x2713;" uuid="1A254CCE-891A-11F1-A3E8-8D81400CC38E">
    <field id="uuid-1A25797E-891A-11F1-A3E8-8D81400CC38E" attrs="" value="" display="Username" name="username" key="username" widget="text"/>
    <field display="Password" name="password" key="password" widget="password" id="uuid-1A25C316-891A-11F1-A3E8-8D81400CC38E" attrs=""/>
    <field key="submit" widget="submit" display="Login" name="submit" attrs="" value="" id="uuid-1A260FE2-891A-11F1-A3E8-8D81400CC38E"/>
  </form>
</response>