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="6061D0A8-A30B-11F1-B1E5-9185FD48BEF4" method="post" encoding="&#x2713;" key="login" uri="">
    <field name="username" display="Username" id="uuid-606202BC-A30B-11F1-B1E5-9185FD48BEF4" key="username" value="" attrs="" widget="text"/>
    <field name="password" key="password" id="uuid-60624BE6-A30B-11F1-B1E5-9185FD48BEF4" display="Password" attrs="" widget="password"/>
    <field widget="submit" attrs="" value="" key="submit" display="Login" id="uuid-60629588-A30B-11F1-B1E5-9185FD48BEF4" name="submit"/>
  </form>
</response>