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 uri="" uuid="697A884C-7A0C-11F1-83B4-9BF3F8248A5F" key="login" method="post" encoding="&#x2713;">
    <field key="username" display="Username" widget="text" value="" attrs="" name="username" id="uuid-697ABC72-7A0C-11F1-83B4-9BF3F8248A5F"/>
    <field display="Password" key="password" attrs="" name="password" id="uuid-697B0588-7A0C-11F1-83B4-9BF3F8248A5F" widget="password"/>
    <field attrs="" id="uuid-697B4F7A-7A0C-11F1-83B4-9BF3F8248A5F" name="submit" widget="submit" value="" display="Login" key="submit"/>
  </form>
</response>