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 uri="" key="login" uuid="1CC94C80-8430-11F1-B3AB-C8751BBD9EFC" encoding="&#x2713;" method="post">
    <field id="uuid-1CC9807E-8430-11F1-B3AB-C8751BBD9EFC" widget="text" display="Username" attrs="" key="username" value="" name="username"/>
    <field display="Password" key="password" attrs="" name="password" id="uuid-1CC9C638-8430-11F1-B3AB-C8751BBD9EFC" widget="password"/>
    <field id="uuid-1CCA130E-8430-11F1-B3AB-C8751BBD9EFC" widget="submit" display="Login" attrs="" key="submit" value="" name="submit"/>
  </form>
</response>