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 uri="" uuid="6DEB267A-8F07-11F0-BC46-74B53B611A6C" encoding="&#x2713;" key="login" method="post">
    <field display="Username" attrs="" name="username" widget="text" key="username" value="" id="uuid-6DEB585C-8F07-11F0-BC46-74B53B611A6C"/>
    <field id="uuid-6DEB9F1A-8F07-11F0-BC46-74B53B611A6C" name="password" widget="password" key="password" display="Password" attrs=""/>
    <field value="" id="uuid-6DEBE68C-8F07-11F0-BC46-74B53B611A6C" name="submit" widget="submit" key="submit" display="Login" attrs=""/>
  </form>
</response>