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="8B5ACFBE-9E14-11F0-9405-F70EDBBCD7F8" encoding="&#x2713;" uri="" method="post" key="login">
    <field key="username" attrs="" name="username" display="Username" value="" id="uuid-8B5B018C-9E14-11F0-9405-F70EDBBCD7F8" widget="text"/>
    <field attrs="" name="password" key="password" display="Password" id="uuid-8B5B47FA-9E14-11F0-9405-F70EDBBCD7F8" widget="password"/>
    <field widget="submit" id="uuid-8B5B9A34-9E14-11F0-9405-F70EDBBCD7F8" value="" display="Login" key="submit" name="submit" attrs=""/>
  </form>
</response>