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 method="post" encoding="&#x2713;" uri="" uuid="DDAF84CC-6CE5-11F0-A71F-ECB0ED0FA296" key="login">
    <field widget="text" key="username" name="username" value="" display="Username" attrs="" id="uuid-DDAFBF00-6CE5-11F0-A71F-ECB0ED0FA296"/>
    <field name="password" key="password" display="Password" attrs="" widget="password" id="uuid-DDB00B0E-6CE5-11F0-A71F-ECB0ED0FA296"/>
    <field widget="submit" key="submit" value="" name="submit" display="Login" attrs="" id="uuid-DDB05C08-6CE5-11F0-A71F-ECB0ED0FA296"/>
  </form>
</response>