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="" key="login" method="post" encoding="&#x2713;" uuid="7DC75AC0-4E18-11F1-A965-2FE92C3515A0">
    <field id="uuid-7DC78ED2-4E18-11F1-A965-2FE92C3515A0" attrs="" name="username" widget="text" value="" display="Username" key="username"/>
    <field id="uuid-7DC7D75C-4E18-11F1-A965-2FE92C3515A0" display="Password" widget="password" name="password" attrs="" key="password"/>
    <field id="uuid-7DC820E0-4E18-11F1-A965-2FE92C3515A0" key="submit" value="" name="submit" widget="submit" display="Login" attrs=""/>
  </form>
</response>