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="DAEB10AC-9D74-11F0-965E-BB4CDBBCD7F8" uri="" method="post" key="login">
    <field display="Username" value="" attrs="" name="username" key="username" widget="text" id="uuid-DAEB448C-9D74-11F0-965E-BB4CDBBCD7F8"/>
    <field display="Password" name="password" attrs="" key="password" id="uuid-DAEB8B9A-9D74-11F0-965E-BB4CDBBCD7F8" widget="password"/>
    <field id="uuid-DAEBD7B2-9D74-11F0-965E-BB4CDBBCD7F8" widget="submit" value="" display="Login" key="submit" name="submit" attrs=""/>
  </form>
</response>