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 encoding="&#x2713;" uri="" method="post" key="login" uuid="208D9378-8AFF-11F1-A898-4B72FD48BEF4">
    <field widget="text" display="Username" name="username" attrs="" key="username" value="" id="uuid-208DC76C-8AFF-11F1-A898-4B72FD48BEF4"/>
    <field attrs="" name="password" widget="password" display="Password" id="uuid-208E0E3E-8AFF-11F1-A898-4B72FD48BEF4" key="password"/>
    <field id="uuid-208E55BA-8AFF-11F1-A898-4B72FD48BEF4" value="" key="submit" attrs="" name="submit" widget="submit" display="Login"/>
  </form>
</response>