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="587CA37E-C9B0-11F1-B497-0241738CD348" encoding="&#x2713;" method="post" uri="" key="login">
    <field value="" display="Username" id="uuid-587CDA1A-C9B0-11F1-B497-0241738CD348" name="username" attrs="" key="username" widget="text"/>
    <field id="uuid-587D21A0-C9B0-11F1-B497-0241738CD348" display="Password" name="password" attrs="" key="password" widget="password"/>
    <field display="Login" id="uuid-587D6AD4-C9B0-11F1-B497-0241738CD348" value="" name="submit" attrs="" widget="submit" key="submit"/>
  </form>
</response>