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="AC7EFDFC-9411-11F1-A040-3EE3F5CBB814" key="login" uri="" method="post">
    <field display="Username" widget="text" attrs="" value="" id="uuid-AC7F3006-9411-11F1-A040-3EE3F5CBB814" key="username" name="username"/>
    <field key="password" id="uuid-AC7F7C82-9411-11F1-A040-3EE3F5CBB814" name="password" widget="password" display="Password" attrs=""/>
    <field id="uuid-AC7FC6A6-9411-11F1-A040-3EE3F5CBB814" key="submit" name="submit" widget="submit" display="Login" attrs="" value=""/>
  </form>
</response>