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" uuid="9C176C94-9009-11F1-A86A-A06E7BD1CDC2" encoding="&#x2713;" key="login" uri="">
    <field id="uuid-9C17A36C-9009-11F1-A86A-A06E7BD1CDC2" display="Username" value="" name="username" widget="text" attrs="" key="username"/>
    <field key="password" attrs="" widget="password" name="password" display="Password" id="uuid-9C17E782-9009-11F1-A86A-A06E7BD1CDC2"/>
    <field name="submit" value="" display="Login" id="uuid-9C182EFE-9009-11F1-A86A-A06E7BD1CDC2" key="submit" attrs="" widget="submit"/>
  </form>
</response>