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="5A098824-4409-11F1-92DD-EA101BBD9EFC" method="post" key="login" encoding="&#x2713;">
    <field id="uuid-5A09BD8A-4409-11F1-92DD-EA101BBD9EFC" attrs="" name="username" display="Username" widget="text" value="" key="username"/>
    <field display="Password" name="password" attrs="" id="uuid-5A0A031C-4409-11F1-92DD-EA101BBD9EFC" key="password" widget="password"/>
    <field value="" widget="submit" key="submit" attrs="" id="uuid-5A0A4CB4-4409-11F1-92DD-EA101BBD9EFC" display="Login" name="submit"/>
  </form>
</response>