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="AE171488-4344-11F1-B836-2EE4A9425785" key="login" method="post" uri="" encoding="&#x2713;">
    <field widget="text" name="username" id="uuid-AE174746-4344-11F1-B836-2EE4A9425785" value="" display="Username" key="username" attrs=""/>
    <field widget="password" id="uuid-AE178D1E-4344-11F1-B836-2EE4A9425785" name="password" display="Password" attrs="" key="password"/>
    <field widget="submit" value="" name="submit" id="uuid-AE17D74C-4344-11F1-B836-2EE4A9425785" key="submit" attrs="" display="Login"/>
  </form>
</response>