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;" key="login" uri="" uuid="5835787E-930E-11F1-AFB5-7F91FD48BEF4">
    <field widget="text" key="username" attrs="" name="username" id="uuid-5835AB64-930E-11F1-AFB5-7F91FD48BEF4" display="Username" value=""/>
    <field id="uuid-5835F4A2-930E-11F1-AFB5-7F91FD48BEF4" name="password" attrs="" key="password" widget="password" display="Password"/>
    <field display="Login" value="" attrs="" name="submit" id="uuid-58363D04-930E-11F1-AFB5-7F91FD48BEF4" widget="submit" key="submit"/>
  </form>
</response>