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 method="post" uuid="ABF27262-7105-11F1-BAC6-2CB72C3515A0" key="login" encoding="&#x2713;" uri="">
    <field widget="text" value="" name="username" id="uuid-ABF2A30E-7105-11F1-BAC6-2CB72C3515A0" display="Username" attrs="" key="username"/>
    <field widget="password" display="Password" attrs="" name="password" id="uuid-ABF2E9AE-7105-11F1-BAC6-2CB72C3515A0" key="password"/>
    <field id="uuid-ABF3340E-7105-11F1-BAC6-2CB72C3515A0" name="submit" display="Login" attrs="" value="" widget="submit" key="submit"/>
  </form>
</response>