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;" uri="" key="login" uuid="412F342A-4EE0-11F1-AA1E-F660242F1D8B" method="post">
    <field display="Username" id="uuid-412F6954-4EE0-11F1-AA1E-F660242F1D8B" value="" key="username" attrs="" widget="text" name="username"/>
    <field id="uuid-412FAFB8-4EE0-11F1-AA1E-F660242F1D8B" display="Password" widget="password" key="password" attrs="" name="password"/>
    <field name="submit" display="Login" id="uuid-412FF6EE-4EE0-11F1-AA1E-F660242F1D8B" widget="submit" key="submit" value="" attrs=""/>
  </form>
</response>