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="FF7ABD64-2564-11F1-9D33-C077A9425785" method="post" key="login">
    <field widget="text" key="username" value="" id="uuid-FF7AED20-2564-11F1-9D33-C077A9425785" display="Username" name="username" attrs=""/>
    <field id="uuid-FF7B35FA-2564-11F1-9D33-C077A9425785" widget="password" key="password" display="Password" name="password" attrs=""/>
    <field display="Login" attrs="" name="submit" widget="submit" key="submit" value="" id="uuid-FF7B7F06-2564-11F1-9D33-C077A9425785"/>
  </form>
</response>