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="27E3B390-4C26-11F1-9187-AD1E2D3515A0" key="login" encoding="&#x2713;" uri="">
    <field key="username" id="uuid-27E3E4E6-4C26-11F1-9187-AD1E2D3515A0" name="username" value="" display="Username" attrs="" widget="text"/>
    <field key="password" id="uuid-27E42FDC-4C26-11F1-9187-AD1E2D3515A0" display="Password" name="password" attrs="" widget="password"/>
    <field display="Login" value="" name="submit" id="uuid-27E47726-4C26-11F1-9187-AD1E2D3515A0" key="submit" widget="submit" attrs=""/>
  </form>
</response>