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 uri="" encoding="&#x2713;" key="login" method="post" uuid="10828166-33F5-11F1-9441-BE821ABF1312">
    <field name="username" key="username" widget="text" attrs="" value="" id="uuid-1082AFA6-33F5-11F1-9441-BE821ABF1312" display="Username"/>
    <field name="password" key="password" widget="password" attrs="" id="uuid-1082F6D2-33F5-11F1-9441-BE821ABF1312" display="Password"/>
    <field display="Login" id="uuid-108341D2-33F5-11F1-9441-BE821ABF1312" value="" attrs="" key="submit" widget="submit" name="submit"/>
  </form>
</response>