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 uuid="6919E61E-4DF6-11F1-8205-6A271BBD9EFC" encoding="&#x2713;" uri="" method="post" key="login">
    <field widget="text" attrs="" id="uuid-691A1652-4DF6-11F1-8205-6A271BBD9EFC" name="username" key="username" value="" display="Username"/>
    <field display="Password" key="password" name="password" attrs="" id="uuid-691A6062-4DF6-11F1-8205-6A271BBD9EFC" widget="password"/>
    <field display="Login" value="" key="submit" name="submit" id="uuid-691AA6B2-4DF6-11F1-8205-6A271BBD9EFC" attrs="" widget="submit"/>
  </form>
</response>