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 uuid="40089C46-364C-11F1-B00C-0998C27BCFD7" key="login" uri="" encoding="&#x2713;" method="post">
    <field display="Username" name="username" value="" widget="text" attrs="" id="uuid-4008D13E-364C-11F1-B00C-0998C27BCFD7" key="username"/>
    <field display="Password" name="password" widget="password" id="uuid-400919C8-364C-11F1-B00C-0998C27BCFD7" key="password" attrs=""/>
    <field display="Login" name="submit" widget="submit" value="" key="submit" attrs="" id="uuid-400965B8-364C-11F1-B00C-0998C27BCFD7"/>
  </form>
</response>