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="7F3D9DB4-882F-11F1-AB73-C76CFD48BEF4" uri="" method="post" encoding="&#x2713;" key="login">
    <field id="uuid-7F3DD3B0-882F-11F1-AB73-C76CFD48BEF4" display="Username" name="username" key="username" value="" attrs="" widget="text"/>
    <field name="password" id="uuid-7F3E1A50-882F-11F1-AB73-C76CFD48BEF4" display="Password" key="password" widget="password" attrs=""/>
    <field display="Login" id="uuid-7F3E64D8-882F-11F1-AB73-C76CFD48BEF4" name="submit" key="submit" value="" attrs="" widget="submit"/>
  </form>
</response>