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;" uri="" uuid="EF7AE02A-A321-11F1-AC20-623C400CC38E" key="login">
    <field id="uuid-EF7B132E-A321-11F1-AC20-623C400CC38E" key="username" display="Username" value="" widget="text" attrs="" name="username"/>
    <field name="password" widget="password" attrs="" id="uuid-EF7B5AE6-A321-11F1-AC20-623C400CC38E" key="password" display="Password"/>
    <field key="submit" id="uuid-EF7BA5B4-A321-11F1-AC20-623C400CC38E" display="Login" value="" attrs="" widget="submit" name="submit"/>
  </form>
</response>