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="1CC196BC-6BC0-11F1-B232-C4BC2C3515A0" uri="" method="post">
    <field id="uuid-1CC1C86C-6BC0-11F1-B232-C4BC2C3515A0" name="username" display="Username" attrs="" value="" key="username" widget="text"/>
    <field display="Password" name="password" attrs="" id="uuid-1CC2122C-6BC0-11F1-B232-C4BC2C3515A0" key="password" widget="password"/>
    <field value="" key="submit" widget="submit" id="uuid-1CC25C3C-6BC0-11F1-B232-C4BC2C3515A0" display="Login" name="submit" attrs=""/>
  </form>
</response>