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 method="post" encoding="&#x2713;" uuid="26756192-3DD1-11F1-AC37-F9FC2597109C" uri="" key="login">
    <field name="username" id="uuid-26759CCA-3DD1-11F1-AC37-F9FC2597109C" display="Username" value="" attrs="" key="username" widget="text"/>
    <field display="Password" id="uuid-2675E2DE-3DD1-11F1-AC37-F9FC2597109C" name="password" widget="password" key="password" attrs=""/>
    <field id="uuid-26762DCA-3DD1-11F1-AC37-F9FC2597109C" display="Login" name="submit" value="" attrs="" widget="submit" key="submit"/>
  </form>
</response>