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="" method="post" encoding="&#x2713;" key="login" uuid="69F5F274-1798-11F1-954C-C435C27BCFD7">
    <field display="Username" attrs="" key="username" value="" widget="text" id="uuid-69F628AC-1798-11F1-954C-C435C27BCFD7" name="username"/>
    <field key="password" display="Password" attrs="" name="password" id="uuid-69F67244-1798-11F1-954C-C435C27BCFD7" widget="password"/>
    <field name="submit" widget="submit" id="uuid-69F6BDA8-1798-11F1-954C-C435C27BCFD7" attrs="" display="Login" value="" key="submit"/>
  </form>
</response>