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" key="login" uri="" uuid="E90AC6C8-90A8-11F1-8A9C-A75D400CC38E" encoding="&#x2713;">
    <field display="Username" widget="text" id="uuid-E90AF5E4-90A8-11F1-8A9C-A75D400CC38E" value="" key="username" attrs="" name="username"/>
    <field name="password" attrs="" key="password" widget="password" id="uuid-E90B4102-90A8-11F1-8A9C-A75D400CC38E" display="Password"/>
    <field display="Login" widget="submit" id="uuid-E90B89AA-90A8-11F1-8A9C-A75D400CC38E" value="" key="submit" attrs="" name="submit"/>
  </form>
</response>