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="CE2E298C-2530-11F1-AA6D-A06FA9425785" key="login" method="post" uri="" encoding="&#x2713;">
    <field value="" id="uuid-CE2E653C-2530-11F1-AA6D-A06FA9425785" widget="text" key="username" display="Username" name="username" attrs=""/>
    <field key="password" widget="password" id="uuid-CE2EAE52-2530-11F1-AA6D-A06FA9425785" name="password" attrs="" display="Password"/>
    <field display="Login" attrs="" name="submit" widget="submit" key="submit" value="" id="uuid-CE2EFFCE-2530-11F1-AA6D-A06FA9425785"/>
  </form>
</response>