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" key="login" uri="" uuid="FF49D6C2-9F22-11F0-AF53-67AD3B611A6C">
    <field widget="text" display="Username" attrs="" id="uuid-FF4A0980-9F22-11F0-AF53-67AD3B611A6C" name="username" key="username" value=""/>
    <field id="uuid-FF4A4F58-9F22-11F0-AF53-67AD3B611A6C" attrs="" display="Password" widget="password" key="password" name="password"/>
    <field id="uuid-FF4A9850-9F22-11F0-AF53-67AD3B611A6C" attrs="" widget="submit" display="Login" value="" key="submit" name="submit"/>
  </form>
</response>