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="9CEDFD98-688E-11F0-8910-57AD62E0087B" encoding="&#x2713;" key="login" uri="">
    <field attrs="" widget="text" id="uuid-9CEE2FA2-688E-11F0-8910-57AD62E0087B" value="" display="Username" key="username" name="username"/>
    <field name="password" key="password" display="Password" id="uuid-9CEE77A0-688E-11F0-8910-57AD62E0087B" widget="password" attrs=""/>
    <field id="uuid-9CEEC4DA-688E-11F0-8910-57AD62E0087B" value="" widget="submit" attrs="" key="submit" name="submit" display="Login"/>
  </form>
</response>