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" encoding="&#x2713;" uri="" uuid="5252EC24-8EAA-11F1-800A-2129400CC38E" method="post">
    <field name="username" display="Username" attrs="" value="" widget="text" id="uuid-525318A2-8EAA-11F1-800A-2129400CC38E" key="username"/>
    <field attrs="" name="password" display="Password" key="password" id="uuid-52535D08-8EAA-11F1-800A-2129400CC38E" widget="password"/>
    <field value="" key="submit" id="uuid-5253A394-8EAA-11F1-800A-2129400CC38E" widget="submit" attrs="" display="Login" name="submit"/>
  </form>
</response>