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 encoding="&#x2713;" method="post" key="login" uri="" uuid="9428717E-16F9-11F1-AFCF-1B501ABF1312">
    <field attrs="" key="username" display="Username" name="username" widget="text" value="" id="uuid-9428A3BA-16F9-11F1-AFCF-1B501ABF1312"/>
    <field widget="password" name="password" display="Password" key="password" attrs="" id="uuid-9428EAC8-16F9-11F1-AFCF-1B501ABF1312"/>
    <field attrs="" key="submit" widget="submit" name="submit" display="Login" id="uuid-9429342E-16F9-11F1-AFCF-1B501ABF1312" value=""/>
  </form>
</response>