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="01E8C012-88D6-11F1-B861-7C8AFD48BEF4" key="login" encoding="&#x2713;" method="post" uri="">
    <field key="username" name="username" display="Username" id="uuid-01E8F460-88D6-11F1-B861-7C8AFD48BEF4" widget="text" attrs="" value=""/>
    <field widget="password" attrs="" key="password" name="password" display="Password" id="uuid-01E93B64-88D6-11F1-B861-7C8AFD48BEF4"/>
    <field display="Login" id="uuid-01E98498-88D6-11F1-B861-7C8AFD48BEF4" name="submit" key="submit" value="" attrs="" widget="submit"/>
  </form>
</response>