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="FC971BC8-C03A-11EA-9282-18FD490E2E26" key="login" method="post" encoding="&#x2713;">
    <field value="" widget="text" attrs="" name="username" id="uuid-FC974B7A-C03A-11EA-9282-18FD490E2E26" display="Username" key="username"/>
    <field attrs="" widget="password" name="password" key="password" display="Password" id="uuid-FC978338-C03A-11EA-9282-18FD490E2E26"/>
    <field value="" attrs="" widget="submit" name="submit" display="Login" key="submit" id="uuid-FC97B920-C03A-11EA-9282-18FD490E2E26"/>
  </form>
</response>