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" method="post" encoding="&#x2713;" uri="" uuid="0A802814-8A6B-11F1-A9C2-C404F6CBB814">
    <field id="uuid-0A8058A2-8A6B-11F1-A9C2-C404F6CBB814" name="username" attrs="" key="username" display="Username" value="" widget="text"/>
    <field widget="password" display="Password" key="password" attrs="" name="password" id="uuid-0A80A3C0-8A6B-11F1-A9C2-C404F6CBB814"/>
    <field id="uuid-0A80EF42-8A6B-11F1-A9C2-C404F6CBB814" name="submit" attrs="" key="submit" display="Login" widget="submit" value=""/>
  </form>
</response>