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="09698748-197A-11F1-8F13-59541ABF1312" method="post" key="login" encoding="&#x2713;" uri="">
    <field display="Username" value="" id="uuid-0969BD4E-197A-11F1-8F13-59541ABF1312" widget="text" attrs="" key="username" name="username"/>
    <field display="Password" id="uuid-096A03EE-197A-11F1-8F13-59541ABF1312" attrs="" widget="password" key="password" name="password"/>
    <field name="submit" key="submit" attrs="" widget="submit" value="" id="uuid-096A4EC6-197A-11F1-8F13-59541ABF1312" display="Login"/>
  </form>
</response>