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 uuid="EA532C2C-7D99-11F1-B7C3-26DE2C3515A0" method="post" key="login" encoding="&#x2713;" uri="">
    <field key="username" name="username" widget="text" attrs="" id="uuid-EA535DAA-7D99-11F1-B7C3-26DE2C3515A0" value="" display="Username"/>
    <field display="Password" attrs="" key="password" name="password" widget="password" id="uuid-EA53A49A-7D99-11F1-B7C3-26DE2C3515A0"/>
    <field value="" display="Login" widget="submit" name="submit" attrs="" key="submit" id="uuid-EA53EDE2-7D99-11F1-B7C3-26DE2C3515A0"/>
  </form>
</response>