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 encoding="&#x2713;" uuid="E49859BE-7F2F-11F1-A13C-ADD825D43659" method="post" uri="" key="login">
    <field id="uuid-E4988CE0-7F2F-11F1-A13C-ADD825D43659" widget="text" value="" key="username" name="username" attrs="" display="Username"/>
    <field display="Password" attrs="" name="password" key="password" id="uuid-E498D6C8-7F2F-11F1-A13C-ADD825D43659" widget="password"/>
    <field display="Login" attrs="" name="submit" value="" key="submit" widget="submit" id="uuid-E499229A-7F2F-11F1-A13C-ADD825D43659"/>
  </form>
</response>