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="312C32EC-8F34-11F0-B736-FEE854FD9ABD" method="post" key="login" encoding="&#x2713;" uri="">
    <field key="username" name="username" display="Username" id="uuid-312C65FA-8F34-11F0-B736-FEE854FD9ABD" widget="text" attrs="" value=""/>
    <field widget="password" attrs="" key="password" display="Password" id="uuid-312CB258-8F34-11F0-B736-FEE854FD9ABD" name="password"/>
    <field widget="submit" value="" attrs="" key="submit" id="uuid-312D001E-8F34-11F0-B736-FEE854FD9ABD" display="Login" name="submit"/>
  </form>
</response>