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" uuid="8534055C-415B-11F1-837A-FAA1A9425785" uri="" encoding="&#x2713;">
    <field display="Username" name="username" widget="text" value="" attrs="" key="username" id="uuid-853436C6-415B-11F1-837A-FAA1A9425785"/>
    <field name="password" display="Password" key="password" attrs="" id="uuid-85348022-415B-11F1-837A-FAA1A9425785" widget="password"/>
    <field name="submit" display="Login" attrs="" key="submit" id="uuid-8534C6AE-415B-11F1-837A-FAA1A9425785" widget="submit" value=""/>
  </form>
</response>