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="28121F82-98AD-11F0-A167-DBBE455C7DD5" method="post">
    <field id="uuid-281253F8-98AD-11F0-A167-DBBE455C7DD5" attrs="" value="" display="Username" widget="text" key="username" name="username"/>
    <field id="uuid-28129E26-98AD-11F0-A167-DBBE455C7DD5" attrs="" display="Password" widget="password" name="password" key="password"/>
    <field id="uuid-2812E8EA-98AD-11F0-A167-DBBE455C7DD5" attrs="" value="" widget="submit" name="submit" key="submit" display="Login"/>
  </form>
</response>