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 uri="" key="login" method="post" uuid="77404370-4FBB-11F1-B133-4E32242F1D8B" encoding="&#x2713;">
    <field display="Username" value="" attrs="" name="username" id="uuid-774076A6-4FBB-11F1-B133-4E32242F1D8B" widget="text" key="username"/>
    <field display="Password" attrs="" name="password" id="uuid-7740BF1C-4FBB-11F1-B133-4E32242F1D8B" widget="password" key="password"/>
    <field attrs="" name="submit" id="uuid-774108A0-4FBB-11F1-B133-4E32242F1D8B" value="" display="Login" key="submit" widget="submit"/>
  </form>
</response>