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 method="post" uuid="ACE3D5DC-15B4-11F1-8142-AC631ABF1312" uri="" key="login" encoding="&#x2713;">
    <field name="username" display="Username" key="username" widget="text" value="" attrs="" id="uuid-ACE407DC-15B4-11F1-8142-AC631ABF1312"/>
    <field id="uuid-ACE44FC6-15B4-11F1-8142-AC631ABF1312" attrs="" widget="password" name="password" display="Password" key="password"/>
    <field value="" attrs="" id="uuid-ACE49990-15B4-11F1-8142-AC631ABF1312" widget="submit" display="Login" name="submit" key="submit"/>
  </form>
</response>