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="83DF82F8-6CCB-11F1-861D-58751BBD9EFC" encoding="&#x2713;" method="post" uri="" key="login">
    <field widget="text" display="Username" value="" attrs="" name="username" id="uuid-83DFB0DE-6CCB-11F1-861D-58751BBD9EFC" key="username"/>
    <field widget="password" key="password" id="uuid-83DFF5C6-6CCB-11F1-861D-58751BBD9EFC" name="password" display="Password" attrs=""/>
    <field widget="submit" id="uuid-83E039A0-6CCB-11F1-861D-58751BBD9EFC" key="submit" name="submit" display="Login" value="" attrs=""/>
  </form>
</response>