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="" encoding="&#x2713;" method="post" key="login" uuid="78033780-6A5B-11F1-9324-39AE8F49F76F">
    <field name="username" key="username" display="Username" id="uuid-78036B6A-6A5B-11F1-9324-39AE8F49F76F" value="" attrs="" widget="text"/>
    <field name="password" key="password" display="Password" id="uuid-7803B3AE-6A5B-11F1-9324-39AE8F49F76F" attrs="" widget="password"/>
    <field display="Login" key="submit" name="submit" id="uuid-7803FA1C-6A5B-11F1-9324-39AE8F49F76F" widget="submit" value="" attrs=""/>
  </form>
</response>