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="" uuid="1FF9F9C4-8771-11F1-A721-9976898B97BA" method="post">
    <field name="username" value="" display="Username" attrs="" id="uuid-1FFA2A34-8771-11F1-A721-9976898B97BA" key="username" widget="text"/>
    <field id="uuid-1FFA75CA-8771-11F1-A721-9976898B97BA" key="password" widget="password" attrs="" name="password" display="Password"/>
    <field value="" display="Login" name="submit" attrs="" widget="submit" key="submit" id="uuid-1FFAC084-8771-11F1-A721-9976898B97BA"/>
  </form>
</response>