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="1D9559D6-4666-11F1-BAF4-94E425D43659" key="login" uri="" encoding="&#x2713;" method="post">
    <field attrs="" key="username" widget="text" name="username" id="uuid-1D9589C4-4666-11F1-BAF4-94E425D43659" value="" display="Username"/>
    <field key="password" attrs="" widget="password" display="Password" id="uuid-1D95CE52-4666-11F1-BAF4-94E425D43659" name="password"/>
    <field name="submit" id="uuid-1D96160A-4666-11F1-BAF4-94E425D43659" value="" display="Login" attrs="" widget="submit" key="submit"/>
  </form>
</response>