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" uuid="EB475882-D0A1-11F1-9DF1-65014A691810" encoding="&#x2713;" method="post" uri="">
    <field key="username" display="Username" value="" name="username" widget="text" attrs="" id="uuid-EB478D70-D0A1-11F1-9DF1-65014A691810" extra=""/>
    <field name="password" key="password" attrs="" widget="password" display="Password" id="uuid-EB47D7F8-D0A1-11F1-9DF1-65014A691810" extra=""/>
    <field key="submit" value="" display="Login" widget="submit" attrs="" name="submit" extra="" id="uuid-EB482A96-D0A1-11F1-9DF1-65014A691810"/>
  </form>
</response>