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" encoding="&#x2713;" key="login" uuid="47FAF4CE-4A35-11F1-95F8-0BD48F49F76F" uri="">
    <field id="uuid-47FB2B24-4A35-11F1-95F8-0BD48F49F76F" key="username" attrs="" name="username" widget="text" display="Username" value=""/>
    <field key="password" id="uuid-47FB71B0-4A35-11F1-95F8-0BD48F49F76F" name="password" attrs="" widget="password" display="Password"/>
    <field name="submit" attrs="" key="submit" id="uuid-47FBBD64-4A35-11F1-95F8-0BD48F49F76F" value="" widget="submit" display="Login"/>
  </form>
</response>