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;" key="login" method="post" uri="" uuid="0F3A8E4C-8C94-11F0-9B0B-46E054FD9ABD">
    <field value="" id="uuid-0F3AC4A2-8C94-11F0-9B0B-46E054FD9ABD" key="username" widget="text" display="Username" name="username" attrs=""/>
    <field attrs="" name="password" display="Password" key="password" widget="password" id="uuid-0F3B0B42-8C94-11F0-9B0B-46E054FD9ABD"/>
    <field value="" id="uuid-0F3B5444-8C94-11F0-9B0B-46E054FD9ABD" key="submit" widget="submit" display="Login" name="submit" attrs=""/>
  </form>
</response>