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;" method="post" uuid="7C6C1E18-9350-11F1-B8B6-22C5FD48BEF4" uri="" key="login">
    <field attrs="" name="username" id="uuid-7C6C52CA-9350-11F1-B8B6-22C5FD48BEF4" key="username" widget="text" display="Username" value=""/>
    <field attrs="" name="password" id="uuid-7C6C9956-9350-11F1-B8B6-22C5FD48BEF4" widget="password" key="password" display="Password"/>
    <field attrs="" name="submit" id="uuid-7C6CE3FC-9350-11F1-B8B6-22C5FD48BEF4" widget="submit" key="submit" display="Login" value=""/>
  </form>
</response>