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 uuid="6775A9BA-164C-11F1-AC29-1F71A9425785" uri="" method="post" encoding="&#x2713;" key="login">
    <field name="username" display="Username" key="username" id="uuid-6775DA02-164C-11F1-AC29-1F71A9425785" value="" attrs="" widget="text"/>
    <field widget="password" attrs="" key="password" id="uuid-67761FEE-164C-11F1-AC29-1F71A9425785" display="Password" name="password"/>
    <field widget="submit" display="Login" name="submit" attrs="" value="" key="submit" id="uuid-677669EA-164C-11F1-AC29-1F71A9425785"/>
  </form>
</response>