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="B350AE5C-7566-11F0-99B3-8A90160DF820" uri="" key="login" method="post" encoding="&#x2713;">
    <field id="uuid-B350DB70-7566-11F0-99B3-8A90160DF820" name="username" key="username" widget="text" display="Username" value="" attrs=""/>
    <field display="Password" attrs="" widget="password" key="password" id="uuid-B351253A-7566-11F0-99B3-8A90160DF820" name="password"/>
    <field attrs="" widget="submit" value="" display="Login" name="submit" id="uuid-B3516F40-7566-11F0-99B3-8A90160DF820" key="submit"/>
  </form>
</response>