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" encoding="&#x2713;" uri="" method="post" uuid="2FD7F9AC-42B8-11F1-8CDE-76C42597109C">
    <field id="uuid-2FD82A76-42B8-11F1-8CDE-76C42597109C" attrs="" key="username" widget="text" value="" display="Username" name="username"/>
    <field attrs="" key="password" id="uuid-2FD87580-42B8-11F1-8CDE-76C42597109C" name="password" display="Password" widget="password"/>
    <field name="submit" display="Login" value="" widget="submit" attrs="" key="submit" id="uuid-2FD8BCA2-42B8-11F1-8CDE-76C42597109C"/>
  </form>
</response>