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="8BE4EAB4-7334-11F1-8ED0-6BE68F49F76F" method="post" encoding="&#x2713;" key="login" uri="">
    <field display="Username" name="username" widget="text" value="" key="username" id="uuid-8BE51EDA-7334-11F1-8ED0-6BE68F49F76F" attrs=""/>
    <field name="password" display="Password" widget="password" key="password" attrs="" id="uuid-8BE56732-7334-11F1-8ED0-6BE68F49F76F"/>
    <field name="submit" display="Login" widget="submit" value="" id="uuid-8BE5AB34-7334-11F1-8ED0-6BE68F49F76F" key="submit" attrs=""/>
  </form>
</response>