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 key="login" encoding="&#x2713;" uri="" uuid="B96B8B10-8C47-11F1-AFEB-4541400CC38E" method="post">
    <field key="username" id="uuid-B96BC1B6-8C47-11F1-AFEB-4541400CC38E" widget="text" value="" attrs="" display="Username" name="username"/>
    <field widget="password" key="password" id="uuid-B96C0BA8-8C47-11F1-AFEB-4541400CC38E" display="Password" name="password" attrs=""/>
    <field display="Login" name="submit" attrs="" value="" widget="submit" id="uuid-B96C5608-8C47-11F1-AFEB-4541400CC38E" key="submit"/>
  </form>
</response>