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="03C2190A-6B0E-11F1-8F95-375C1BBD9EFC" method="post" encoding="&#x2713;" uri="" key="login">
    <field widget="text" display="Username" value="" attrs="" id="uuid-03C2498E-6B0E-11F1-8F95-375C1BBD9EFC" key="username" name="username"/>
    <field widget="password" display="Password" attrs="" name="password" id="uuid-03C28EC6-6B0E-11F1-8F95-375C1BBD9EFC" key="password"/>
    <field display="Login" attrs="" value="" key="submit" id="uuid-03C2DB2E-6B0E-11F1-8F95-375C1BBD9EFC" name="submit" widget="submit"/>
  </form>
</response>