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="0236EF08-D214-11F1-B90B-8B1A4A691810" method="post" key="login" encoding="&#x2713;">
    <field display="Username" id="uuid-0237219E-D214-11F1-B90B-8B1A4A691810" value="" extra="" key="username" name="username" attrs="" widget="text"/>
    <field widget="password" key="password" attrs="" id="uuid-02376960-D214-11F1-B90B-8B1A4A691810" extra="" display="Password" name="password"/>
    <field name="submit" attrs="" widget="submit" display="Login" value="" id="uuid-0237B154-D214-11F1-B90B-8B1A4A691810" extra="" key="submit"/>
  </form>
</response>