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 method="post" uuid="73CEF282-C9F4-11F1-8887-8D4F738CD348" encoding="&#x2713;" key="login" uri="">
    <field value="" display="Username" id="uuid-73CF27CA-C9F4-11F1-8887-8D4F738CD348" name="username" attrs="" key="username" widget="text"/>
    <field key="password" widget="password" attrs="" name="password" id="uuid-73CF6E92-C9F4-11F1-8887-8D4F738CD348" display="Password"/>
    <field attrs="" key="submit" widget="submit" value="" display="Login" id="uuid-73CFBBFE-C9F4-11F1-8887-8D4F738CD348" name="submit"/>
  </form>
</response>