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" uri="" uuid="05322718-D070-11F1-BDE8-0FEB0B50D6CE" method="post" encoding="&#x2713;">
    <field name="username" display="Username" value="" extra="" attrs="" widget="text" key="username" id="uuid-05325D14-D070-11F1-BDE8-0FEB0B50D6CE"/>
    <field display="Password" name="password" key="password" attrs="" extra="" widget="password" id="uuid-0532A74C-D070-11F1-BDE8-0FEB0B50D6CE"/>
    <field value="" name="submit" display="Login" widget="submit" extra="" attrs="" key="submit" id="uuid-0532F45E-D070-11F1-BDE8-0FEB0B50D6CE"/>
  </form>
</response>