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" uri="" uuid="86A940F4-1579-11F1-8276-8CC32597109C" method="post">
    <field display="Username" value="" key="username" id="uuid-86A97772-1579-11F1-8276-8CC32597109C" name="username" attrs="" widget="text"/>
    <field name="password" attrs="" widget="password" id="uuid-86A9BE80-1579-11F1-8276-8CC32597109C" key="password" display="Password"/>
    <field id="uuid-86AA07E6-1579-11F1-8276-8CC32597109C" name="submit" attrs="" widget="submit" display="Login" value="" key="submit"/>
  </form>
</response>