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="61713E54-4521-11F1-86FB-75E18F49F76F">
    <field name="username" id="uuid-61717298-4521-11F1-86FB-75E18F49F76F" value="" attrs="" widget="text" key="username" display="Username"/>
    <field widget="password" name="password" id="uuid-6171B654-4521-11F1-86FB-75E18F49F76F" attrs="" display="Password" key="password"/>
    <field value="" attrs="" name="submit" id="uuid-6171FFF6-4521-11F1-86FB-75E18F49F76F" widget="submit" key="submit" display="Login"/>
  </form>
</response>