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="" uuid="A9104DF6-28E6-11F1-9190-B1AB0C0019C7" method="post" key="login">
    <field name="username" attrs="" value="" widget="text" id="uuid-A9107A38-28E6-11F1-8EC6-B1AB0C0019C7" key="username" display="Username"/>
    <field id="uuid-A910833E-28E6-11F1-9856-B1AB0C0019C7" key="password" display="Password" attrs="" name="password" widget="password"/>
    <field key="submit" display="Login" id="uuid-A910D582-28E6-11F1-8DCE-B1AB0C0019C7" value="" widget="submit" name="submit" attrs=""/>
  </form>
</response>