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="483D37FE-7E0F-11F1-9633-81EEF8248A5F" method="post" uri="" key="login">
    <field value="" display="Username" id="uuid-483D7336-7E0F-11F1-9633-81EEF8248A5F" name="username" widget="text" key="username" attrs=""/>
    <field attrs="" key="password" widget="password" name="password" id="uuid-483DBC88-7E0F-11F1-9633-81EEF8248A5F" display="Password"/>
    <field attrs="" widget="submit" key="submit" display="Login" id="uuid-483E0C1A-7E0F-11F1-9633-81EEF8248A5F" name="submit" value=""/>
  </form>
</response>