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="0A6C7EE6-79C2-11F0-A720-82C8F3489F51" encoding="&#x2713;" uri="" key="login" method="post">
    <field display="Username" widget="text" name="username" value="" attrs="" key="username" id="uuid-0A6CADF8-79C2-11F0-A720-82C8F3489F51"/>
    <field id="uuid-0A6CF4F2-79C2-11F0-A720-82C8F3489F51" key="password" attrs="" name="password" display="Password" widget="password"/>
    <field widget="submit" display="Login" name="submit" key="submit" id="uuid-0A6D3BF6-79C2-11F0-A720-82C8F3489F51" value="" attrs=""/>
  </form>
</response>