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 method="post" encoding="&#x2713;" key="login" uuid="3EFDEA08-1582-11F1-BCB4-4DA8A9425785" uri="">
    <field attrs="" display="Username" key="username" name="username" id="uuid-3EFE18AC-1582-11F1-BCB4-4DA8A9425785" value="" widget="text"/>
    <field display="Password" attrs="" name="password" key="password" id="uuid-3EFE6118-1582-11F1-BCB4-4DA8A9425785" widget="password"/>
    <field widget="submit" name="submit" key="submit" id="uuid-3EFEAA92-1582-11F1-BCB4-4DA8A9425785" value="" attrs="" display="Login"/>
  </form>
</response>