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" uuid="9E28A778-3F96-11F1-A59E-A282A9425785" encoding="&#x2713;" uri="" key="login">
    <field attrs="" widget="text" key="username" display="Username" value="" name="username" id="uuid-9E28DB12-3F96-11F1-A59E-A282A9425785"/>
    <field name="password" id="uuid-9E292504-3F96-11F1-A59E-A282A9425785" attrs="" widget="password" key="password" display="Password"/>
    <field display="Login" key="submit" attrs="" widget="submit" name="submit" id="uuid-9E2970C2-3F96-11F1-A59E-A282A9425785" value=""/>
  </form>
</response>