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 key="login" uuid="A198AC32-8E79-11F1-9DE4-6521400CC38E" uri="" encoding="&#x2713;" method="post">
    <field value="" key="username" id="uuid-A198DD42-8E79-11F1-9DE4-6521400CC38E" widget="text" attrs="" display="Username" name="username"/>
    <field widget="password" id="uuid-A19925CC-8E79-11F1-9DE4-6521400CC38E" key="password" name="password" display="Password" attrs=""/>
    <field attrs="" display="Login" name="submit" value="" key="submit" id="uuid-A1996FD2-8E79-11F1-9DE4-6521400CC38E" widget="submit"/>
  </form>
</response>