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="" encoding="&#x2713;" uuid="5A28E05E-1998-11EA-8F4A-8C182D83AE63" method="post" key="login">
    <field widget="text" display="Username" id="uuid-5A290DB8-1998-11EA-8F4A-8C182D83AE63" key="username" attrs="" name="username" value=""/>
    <field display="Password" id="uuid-5A293D88-1998-11EA-8F4A-8C182D83AE63" widget="password" attrs="" key="password" name="password"/>
    <field value="" name="submit" key="submit" attrs="" widget="submit" id="uuid-5A29703C-1998-11EA-8F4A-8C182D83AE63" display="Login"/>
  </form>
</response>