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" uri="" uuid="72A7A1D6-2DB1-11F1-8089-276CA9425785" encoding="&#x2713;">
    <field id="uuid-72A7D408-2DB1-11F1-8089-276CA9425785" attrs="" value="" widget="text" display="Username" name="username" key="username"/>
    <field name="password" key="password" display="Password" widget="password" attrs="" id="uuid-72A81C9C-2DB1-11F1-8089-276CA9425785"/>
    <field key="submit" name="submit" display="Login" widget="submit" attrs="" value="" id="uuid-72A8656C-2DB1-11F1-8089-276CA9425785"/>
  </form>
</response>