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 key="login" uuid="77377E1C-261B-11F1-9584-00BCA9425785" method="post" encoding="&#x2713;" uri="">
    <field display="Username" name="username" attrs="" widget="text" key="username" value="" id="uuid-7737AE32-261B-11F1-9584-00BCA9425785"/>
    <field display="Password" name="password" attrs="" widget="password" key="password" id="uuid-7737F63A-261B-11F1-9584-00BCA9425785"/>
    <field value="" id="uuid-77383F5A-261B-11F1-9584-00BCA9425785" widget="submit" key="submit" display="Login" name="submit" attrs=""/>
  </form>
</response>