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 key="login" uri="" encoding="&#x2713;" method="post" uuid="8F95BB1A-40C2-11F1-9E55-C085A9425785">
    <field value="" widget="text" id="uuid-8F95E7A2-40C2-11F1-9E55-C085A9425785" key="username" attrs="" display="Username" name="username"/>
    <field display="Password" name="password" widget="password" id="uuid-8F96311C-40C2-11F1-9E55-C085A9425785" attrs="" key="password"/>
    <field display="Login" name="submit" widget="submit" value="" key="submit" attrs="" id="uuid-8F967E7E-40C2-11F1-9E55-C085A9425785"/>
  </form>
</response>