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" uri="" uuid="7D782686-8652-11F1-9AC0-DBF3F5CBB814" method="post" encoding="&#x2713;">
    <field id="uuid-7D785836-8652-11F1-9AC0-DBF3F5CBB814" display="Username" widget="text" attrs="" key="username" value="" name="username"/>
    <field display="Password" attrs="" widget="password" id="uuid-7D789E86-8652-11F1-9AC0-DBF3F5CBB814" name="password" key="password"/>
    <field value="" key="submit" name="submit" id="uuid-7D78E7F6-8652-11F1-9AC0-DBF3F5CBB814" widget="submit" attrs="" display="Login"/>
  </form>
</response>