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" uuid="9851D886-8C1F-11F0-9789-37EA35923908" encoding="&#x2713;" key="login" uri="">
    <field key="username" display="Username" widget="text" attrs="" value="" name="username" id="uuid-98520504-8C1F-11F0-9789-37EA35923908"/>
    <field id="uuid-98524A32-8C1F-11F0-9789-37EA35923908" attrs="" name="password" widget="password" display="Password" key="password"/>
    <field id="uuid-98528FB0-8C1F-11F0-9789-37EA35923908" widget="submit" display="Login" key="submit" value="" name="submit" attrs=""/>
  </form>
</response>