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;" uuid="F7273806-2238-11F1-A6A6-CFCFA9425785" method="post" key="login" uri="">
    <field display="Username" value="" key="username" name="username" attrs="" widget="text" id="uuid-F72765F6-2238-11F1-A6A6-CFCFA9425785"/>
    <field display="Password" key="password" attrs="" name="password" widget="password" id="uuid-F727AF84-2238-11F1-A6A6-CFCFA9425785"/>
    <field name="submit" attrs="" widget="submit" id="uuid-F728039E-2238-11F1-A6A6-CFCFA9425785" display="Login" value="" key="submit"/>
  </form>
</response>