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 key="login" uri="" uuid="8DE39E10-7CCA-11F1-B6BE-884C1BBD9EFC" method="post" encoding="&#x2713;">
    <field display="Username" key="username" id="uuid-8DE3D240-7CCA-11F1-B6BE-884C1BBD9EFC" widget="text" name="username" value="" attrs=""/>
    <field widget="password" name="password" attrs="" key="password" id="uuid-8DE41A98-7CCA-11F1-B6BE-884C1BBD9EFC" display="Password"/>
    <field display="Login" key="submit" id="uuid-8DE463D6-7CCA-11F1-B6BE-884C1BBD9EFC" widget="submit" name="submit" value="" attrs=""/>
  </form>
</response>