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="9037E262-1897-11F1-8A3E-86C8A9425785" key="login" encoding="&#x2713;" uri="">
    <field value="" display="Username" id="uuid-90381AE8-1897-11F1-8A3E-86C8A9425785" widget="text" key="username" name="username" attrs=""/>
    <field key="password" name="password" display="Password" widget="password" id="uuid-9038620A-1897-11F1-8A3E-86C8A9425785" attrs=""/>
    <field key="submit" name="submit" display="Login" value="" widget="submit" id="uuid-9038AFF8-1897-11F1-8A3E-86C8A9425785" attrs=""/>
  </form>
</response>