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;" uuid="7ACA24A6-938C-11F1-A874-9E8B400CC38E" uri="" key="login" method="post">
    <field display="Username" id="uuid-7ACA56C4-938C-11F1-A874-9E8B400CC38E" widget="text" value="" key="username" attrs="" name="username"/>
    <field attrs="" name="password" key="password" widget="password" id="uuid-7ACAA0B6-938C-11F1-A874-9E8B400CC38E" display="Password"/>
    <field widget="submit" id="uuid-7ACAE97C-938C-11F1-A874-9E8B400CC38E" display="Login" attrs="" name="submit" key="submit" value=""/>
  </form>
</response>