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="33E56986-9263-11F0-A311-0AE7455C7DD5" key="login" uri="">
    <field display="Username" widget="text" name="username" id="uuid-33E59EB0-9263-11F0-A311-0AE7455C7DD5" attrs="" value="" key="username"/>
    <field attrs="" key="password" widget="password" name="password" id="uuid-33E5E65E-9263-11F0-A311-0AE7455C7DD5" display="Password"/>
    <field widget="submit" name="submit" id="uuid-33E6310E-9263-11F0-A311-0AE7455C7DD5" attrs="" key="submit" value="" display="Login"/>
  </form>
</response>