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="5F0E4EDA-78A9-11F0-A8A0-B37DED0FA296" encoding="&#x2713;" key="login" uri="">
    <field name="username" attrs="" value="" display="Username" key="username" widget="text" id="uuid-5F0E8BFC-78A9-11F0-A8A0-B37DED0FA296"/>
    <field id="uuid-5F0ED7C4-78A9-11F0-A8A0-B37DED0FA296" name="password" attrs="" display="Password" key="password" widget="password"/>
    <field widget="submit" key="submit" display="Login" value="" attrs="" name="submit" id="uuid-5F0F292C-78A9-11F0-A8A0-B37DED0FA296"/>
  </form>
</response>