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="9C88FC80-3EB3-11F1-AE25-AFCE2597109C" method="post" encoding="&#x2713;" key="login" uri="">
    <field display="Username" widget="text" id="uuid-9C893164-3EB3-11F1-AE25-AFCE2597109C" name="username" key="username" attrs="" value=""/>
    <field display="Password" widget="password" id="uuid-9C897606-3EB3-11F1-AE25-AFCE2597109C" key="password" name="password" attrs=""/>
    <field display="Login" id="uuid-9C89BD14-3EB3-11F1-AE25-AFCE2597109C" widget="submit" value="" attrs="" name="submit" key="submit"/>
  </form>
</response>