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="761D5DD8-3428-11F1-B1E1-1C6AA9425785" key="login" uri="" method="post">
    <field value="" name="username" widget="text" attrs="" display="Username" id="uuid-761D946A-3428-11F1-B1E1-1C6AA9425785" key="username"/>
    <field key="password" id="uuid-761DDC9A-3428-11F1-B1E1-1C6AA9425785" display="Password" attrs="" widget="password" name="password"/>
    <field display="Login" id="uuid-761E279A-3428-11F1-B1E1-1C6AA9425785" key="submit" name="submit" value="" attrs="" widget="submit"/>
  </form>
</response>