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 uri="" encoding="&#x2713;" key="login" method="post" uuid="193CE3A0-2581-11F1-A7C5-377DA9425785">
    <field attrs="" name="username" display="Username" key="username" widget="text" id="uuid-193D1424-2581-11F1-A7C5-377DA9425785" value=""/>
    <field display="Password" attrs="" name="password" id="uuid-193D5C7C-2581-11F1-A7C5-377DA9425785" widget="password" key="password"/>
    <field name="submit" attrs="" display="Login" id="uuid-193DA5E2-2581-11F1-A7C5-377DA9425785" value="" key="submit" widget="submit"/>
  </form>
</response>