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;" method="post" uri="" uuid="0A20F2AA-6A99-11F1-9B3C-99241BBD9EFC">
    <field name="username" key="username" id="uuid-0A212658-6A99-11F1-9B3C-99241BBD9EFC" attrs="" value="" display="Username" widget="text"/>
    <field key="password" id="uuid-0A2170B8-6A99-11F1-9B3C-99241BBD9EFC" name="password" attrs="" display="Password" widget="password"/>
    <field display="Login" attrs="" value="" name="submit" key="submit" id="uuid-0A21B992-6A99-11F1-9B3C-99241BBD9EFC" widget="submit"/>
  </form>
</response>