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="257888D2-8872-11F1-B573-0E7AFD48BEF4" uri="" key="login" encoding="&#x2713;" method="post">
    <field key="username" display="Username" id="uuid-2578BCA8-8872-11F1-B573-0E7AFD48BEF4" name="username" attrs="" widget="text" value=""/>
    <field id="uuid-257903DE-8872-11F1-B573-0E7AFD48BEF4" display="Password" name="password" key="password" attrs="" widget="password"/>
    <field attrs="" widget="submit" value="" key="submit" display="Login" id="uuid-25795064-8872-11F1-B573-0E7AFD48BEF4" name="submit"/>
  </form>
</response>