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 key="login" encoding="&#x2713;" uri="" uuid="998CED4A-4CCB-11F1-AD28-87BA8F49F76F" method="post">
    <field attrs="" display="Username" value="" id="uuid-998D1B80-4CCB-11F1-AD28-87BA8F49F76F" key="username" widget="text" name="username"/>
    <field attrs="" display="Password" id="uuid-998D625C-4CCB-11F1-AD28-87BA8F49F76F" key="password" widget="password" name="password"/>
    <field value="" display="Login" attrs="" id="uuid-998DABFE-4CCB-11F1-AD28-87BA8F49F76F" widget="submit" name="submit" key="submit"/>
  </form>
</response>