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" encoding="&#x2713;" uuid="90250370-1A51-11F1-942C-C768A9425785" key="login" uri="">
    <field display="Username" attrs="" value="" id="uuid-90253368-1A51-11F1-942C-C768A9425785" key="username" widget="text" name="username"/>
    <field id="uuid-9025744A-1A51-11F1-942C-C768A9425785" key="password" attrs="" display="Password" widget="password" name="password"/>
    <field display="Login" value="" attrs="" id="uuid-9025BB4E-1A51-11F1-942C-C768A9425785" key="submit" name="submit" widget="submit"/>
  </form>
</response>