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="8EA2E1BC-1B6D-11F1-90D6-F1751ABF1312" uri="" encoding="&#x2713;" method="post" key="login">
    <field display="Username" value="" id="uuid-8EA3101A-1B6D-11F1-90D6-F1751ABF1312" widget="text" attrs="" key="username" name="username"/>
    <field id="uuid-8EA35A02-1B6D-11F1-90D6-F1751ABF1312" display="Password" name="password" key="password" attrs="" widget="password"/>
    <field name="submit" key="submit" attrs="" widget="submit" value="" id="uuid-8EA3A462-1B6D-11F1-90D6-F1751ABF1312" display="Login"/>
  </form>
</response>