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 encoding="&#x2713;" method="post" uuid="9F6B7978-1A05-11F1-A628-B8B9A9425785" key="login" uri="">
    <field name="username" widget="text" attrs="" value="" display="Username" id="uuid-9F6BA740-1A05-11F1-A628-B8B9A9425785" key="username"/>
    <field attrs="" display="Password" key="password" id="uuid-9F6BEF0C-1A05-11F1-A628-B8B9A9425785" name="password" widget="password"/>
    <field id="uuid-9F6C369C-1A05-11F1-A628-B8B9A9425785" key="submit" display="Login" attrs="" value="" widget="submit" name="submit"/>
  </form>
</response>