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" uri="" uuid="9572C90C-48E6-11F1-B023-77F32C3515A0" encoding="&#x2713;">
    <field key="username" name="username" display="Username" widget="text" value="" attrs="" id="uuid-9572F9C2-48E6-11F1-B023-77F32C3515A0"/>
    <field key="password" id="uuid-957340C6-48E6-11F1-B023-77F32C3515A0" widget="password" display="Password" attrs="" name="password"/>
    <field name="submit" id="uuid-957385E0-48E6-11F1-B023-77F32C3515A0" display="Login" attrs="" widget="submit" value="" key="submit"/>
  </form>
</response>