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;" uuid="5C66E0E4-2497-11F1-B4DB-03AE0C0019C7" uri="" key="login" method="post">
    <field name="username" attrs="" display="Username" id="uuid-5C67110E-2497-11F1-B4DB-03AE0C0019C7" value="" widget="text" key="username"/>
    <field id="uuid-5C675D8A-2497-11F1-B4DB-03AE0C0019C7" key="password" widget="password" attrs="" name="password" display="Password"/>
    <field name="submit" attrs="" display="Login" id="uuid-5C67ACF4-2497-11F1-B4DB-03AE0C0019C7" value="" widget="submit" key="submit"/>
  </form>
</response>