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" method="post" encoding="&#x2713;" uri="" uuid="8A4AD292-89F3-11F1-A5C1-70EEF5CBB814">
    <field id="uuid-8A4B0898-89F3-11F1-A5C1-70EEF5CBB814" widget="text" value="" display="Username" name="username" attrs="" key="username"/>
    <field id="uuid-8A4B4BBE-89F3-11F1-A5C1-70EEF5CBB814" widget="password" display="Password" attrs="" name="password" key="password"/>
    <field name="submit" attrs="" key="submit" widget="submit" value="" display="Login" id="uuid-8A4B9632-89F3-11F1-A5C1-70EEF5CBB814"/>
  </form>
</response>