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="0BB86222-6799-11F1-9E3E-1A7E1BBD9EFC" encoding="&#x2713;" uri="" method="post" key="login">
    <field value="" attrs="" display="Username" key="username" id="uuid-0BB894D6-6799-11F1-9E3E-1A7E1BBD9EFC" name="username" widget="text"/>
    <field widget="password" name="password" id="uuid-0BB8E260-6799-11F1-9E3E-1A7E1BBD9EFC" key="password" attrs="" display="Password"/>
    <field key="submit" name="submit" id="uuid-0BB92F0E-6799-11F1-9E3E-1A7E1BBD9EFC" display="Login" attrs="" value="" widget="submit"/>
  </form>
</response>