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="3D99A88A-3B3B-11F1-8C27-427BA9425785" key="login" method="post" encoding="&#x2713;" uri="">
    <field widget="text" key="username" id="uuid-3D99D814-3B3B-11F1-8C27-427BA9425785" attrs="" display="Username" value="" name="username"/>
    <field key="password" widget="password" id="uuid-3D9A20A8-3B3B-11F1-8C27-427BA9425785" name="password" attrs="" display="Password"/>
    <field id="uuid-3D9A67FC-3B3B-11F1-8C27-427BA9425785" key="submit" widget="submit" value="" name="submit" attrs="" display="Login"/>
  </form>
</response>