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" key="login" uri="" uuid="92A0C158-9183-11F1-A278-0A31400CC38E" encoding="&#x2713;">
    <field display="Username" id="uuid-92A0F07E-9183-11F1-A278-0A31400CC38E" widget="text" key="username" value="" name="username" attrs=""/>
    <field key="password" name="password" attrs="" display="Password" id="uuid-92A13C6E-9183-11F1-A278-0A31400CC38E" widget="password"/>
    <field key="submit" value="" attrs="" name="submit" display="Login" widget="submit" id="uuid-92A186BA-9183-11F1-A278-0A31400CC38E"/>
  </form>
</response>