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;" method="post" uri="" key="login" uuid="2A08E7EC-329C-11F1-A285-701F1ABF1312">
    <field value="" name="username" key="username" id="uuid-2A091E9C-329C-11F1-A285-701F1ABF1312" widget="text" attrs="" display="Username"/>
    <field name="password" id="uuid-2A096B22-329C-11F1-A285-701F1ABF1312" key="password" attrs="" widget="password" display="Password"/>
    <field value="" name="submit" key="submit" widget="submit" attrs="" id="uuid-2A09B7D0-329C-11F1-A285-701F1ABF1312" display="Login"/>
  </form>
</response>