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="11F11A5A-D128-11F1-8530-FCCB8D6E13F8" key="login" encoding="&#x2713;" uri="">
    <field id="uuid-11F14EA8-D128-11F1-8530-FCCB8D6E13F8" display="Username" attrs="" widget="text" extra="" name="username" key="username" value=""/>
    <field name="password" extra="" display="Password" id="uuid-11F19660-D128-11F1-8530-FCCB8D6E13F8" widget="password" attrs="" key="password"/>
    <field value="" key="submit" extra="" name="submit" attrs="" widget="submit" id="uuid-11F1E00C-D128-11F1-8530-FCCB8D6E13F8" display="Login"/>
  </form>
</response>