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 uuid="0F9879A6-8FD4-11F0-9E4C-E35A36923908" key="login" encoding="&#x2713;" uri="" method="post">
    <field widget="text" key="username" display="Username" attrs="" value="" name="username" id="uuid-0F98B254-8FD4-11F0-9E4C-E35A36923908"/>
    <field id="uuid-0F98F82C-8FD4-11F0-9E4C-E35A36923908" name="password" key="password" display="Password" widget="password" attrs=""/>
    <field name="submit" id="uuid-0F994304-8FD4-11F0-9E4C-E35A36923908" display="Login" widget="submit" key="submit" attrs="" value=""/>
  </form>
</response>