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="D6A5AD66-9709-11F0-9EFA-452855FD9ABD" encoding="&#x2713;" key="login" uri="" method="post">
    <field widget="text" value="" id="uuid-D6A5E308-9709-11F0-9EFA-452855FD9ABD" key="username" display="Username" name="username" attrs=""/>
    <field display="Password" name="password" attrs="" widget="password" id="uuid-D6A62AF2-9709-11F0-9EFA-452855FD9ABD" key="password"/>
    <field attrs="" name="submit" display="Login" key="submit" id="uuid-D6A67516-9709-11F0-9EFA-452855FD9ABD" value="" widget="submit"/>
  </form>
</response>