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="95187BC6-6A6C-11F1-9EEF-2BBF25D43659" uri="" key="login" method="post">
    <field display="Username" attrs="" name="username" key="username" widget="text" value="" id="uuid-9518ADC6-6A6C-11F1-9EEF-2BBF25D43659"/>
    <field id="uuid-9518F416-6A6C-11F1-9EEF-2BBF25D43659" key="password" widget="password" name="password" display="Password" attrs=""/>
    <field value="" id="uuid-95193F70-6A6C-11F1-9EEF-2BBF25D43659" name="submit" attrs="" display="Login" widget="submit" key="submit"/>
  </form>
</response>