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 uri="" uuid="0E115DB0-70E3-11F0-BB45-F547160DF820" encoding="&#x2713;" key="login" method="post">
    <field id="uuid-0E11969A-70E3-11F0-BB45-F547160DF820" display="Username" attrs="" key="username" name="username" value="" widget="text"/>
    <field display="Password" key="password" name="password" attrs="" id="uuid-0E11E320-70E3-11F0-BB45-F547160DF820" widget="password"/>
    <field value="" widget="submit" id="uuid-0E123258-70E3-11F0-BB45-F547160DF820" attrs="" key="submit" name="submit" display="Login"/>
  </form>
</response>