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="43455CE6-276F-11F1-AEEC-E6BF2597109C" key="login" encoding="&#x2713;" method="post" uri="">
    <field name="username" key="username" widget="text" value="" attrs="" display="Username" id="uuid-43458DBA-276F-11F1-AEEC-E6BF2597109C"/>
    <field key="password" name="password" attrs="" display="Password" id="uuid-4345D3E2-276F-11F1-AEEC-E6BF2597109C" widget="password"/>
    <field widget="submit" id="uuid-43461F28-276F-11F1-AEEC-E6BF2597109C" display="Login" value="" attrs="" name="submit" key="submit"/>
  </form>
</response>