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="813AAEEE-9DB7-11F0-97E2-43B72F49FC8C" uri="" method="post" key="login" encoding="&#x2713;">
    <field id="uuid-813AE1AC-9DB7-11F0-97E2-43B72F49FC8C" display="Username" key="username" name="username" widget="text" value="" attrs=""/>
    <field attrs="" widget="password" name="password" key="password" id="uuid-813B2914-9DB7-11F0-97E2-43B72F49FC8C" display="Password"/>
    <field widget="submit" attrs="" value="" key="submit" display="Login" id="uuid-813B76EE-9DB7-11F0-97E2-43B72F49FC8C" name="submit"/>
  </form>
</response>