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 encoding="&#x2713;" uri="" method="post" uuid="9CA45B0C-937B-11F1-8A12-5C2F7BD1CDC2" key="login">
    <field key="username" name="username" attrs="" widget="text" value="" id="uuid-9CA48FD2-937B-11F1-8A12-5C2F7BD1CDC2" display="Username"/>
    <field name="password" widget="password" attrs="" key="password" id="uuid-9CA4DAE6-937B-11F1-8A12-5C2F7BD1CDC2" display="Password"/>
    <field key="submit" name="submit" widget="submit" value="" attrs="" id="uuid-9CA525FA-937B-11F1-8A12-5C2F7BD1CDC2" display="Login"/>
  </form>
</response>