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 method="post" key="login" uuid="6BB426D6-3C1D-11F1-9D2C-1EE52597109C" encoding="&#x2713;" uri="">
    <field name="username" attrs="" widget="text" key="username" id="uuid-6BB458A4-3C1D-11F1-9D2C-1EE52597109C" value="" display="Username"/>
    <field widget="password" attrs="" name="password" display="Password" key="password" id="uuid-6BB4A1CE-3C1D-11F1-9D2C-1EE52597109C"/>
    <field display="Login" value="" id="uuid-6BB4ED0A-3C1D-11F1-9D2C-1EE52597109C" key="submit" widget="submit" attrs="" name="submit"/>
  </form>
</response>