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 uuid="1022BC6A-1843-11EA-B7F1-4FDF490E2E26" key="login" uri="" method="post" encoding="&#x2713;">
    <field value="" key="username" id="uuid-1022ED84-1843-11EA-B7F1-4FDF490E2E26" display="Username" attrs="" widget="text" name="username"/>
    <field name="password" widget="password" attrs="" display="Password" key="password" id="uuid-10232CE0-1843-11EA-B7F1-4FDF490E2E26"/>
    <field name="submit" widget="submit" display="Login" value="" key="submit" id="uuid-102366CE-1843-11EA-B7F1-4FDF490E2E26" attrs=""/>
  </form>
</response>