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 encoding="&#x2713;" uuid="24162476-84FE-11F1-B2AB-C17E898B97BA" key="login" uri="" method="post">
    <field attrs="" display="Username" id="uuid-24165360-84FE-11F1-B2AB-C17E898B97BA" key="username" value="" widget="text" name="username"/>
    <field widget="password" name="password" key="password" id="uuid-24169B36-84FE-11F1-B2AB-C17E898B97BA" display="Password" attrs=""/>
    <field key="submit" id="uuid-2416E67C-84FE-11F1-B2AB-C17E898B97BA" name="submit" widget="submit" value="" attrs="" display="Login"/>
  </form>
</response>