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 uri="" encoding="&#x2713;" key="login" uuid="99C3DEB0-269F-11F1-A724-A9D4A9425785" method="post">
    <field name="username" attrs="" display="Username" key="username" widget="text" id="uuid-99C40CF0-269F-11F1-A724-A9D4A9425785" value=""/>
    <field key="password" widget="password" id="uuid-99C45476-269F-11F1-A724-A9D4A9425785" attrs="" name="password" display="Password"/>
    <field widget="submit" key="submit" value="" id="uuid-99C49C2E-269F-11F1-A724-A9D4A9425785" display="Login" name="submit" attrs=""/>
  </form>
</response>