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 uuid="8D8C36CE-37CA-11F1-962F-8DAC0C0019C7" encoding="&#x2713;" uri="" method="post" key="login">
    <field display="Username" key="username" id="uuid-8D8C69FA-37CA-11F1-962F-8DAC0C0019C7" widget="text" value="" attrs="" name="username"/>
    <field name="password" attrs="" widget="password" id="uuid-8D8CB3B0-37CA-11F1-962F-8DAC0C0019C7" display="Password" key="password"/>
    <field value="" name="submit" attrs="" widget="submit" id="uuid-8D8CFB2C-37CA-11F1-962F-8DAC0C0019C7" key="submit" display="Login"/>
  </form>
</response>