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="" method="post" uuid="DCF70CFC-1990-11EA-A23B-5CE1C2841434" encoding="&#x2713;" key="login">
    <field widget="text" id="uuid-DCF7874A-1990-11EA-A23B-5CE1C2841434" attrs="" value="" display="Username" name="username" key="username"/>
    <field attrs="" id="uuid-DCF7B6CA-1990-11EA-A23B-5CE1C2841434" widget="password" key="password" name="password" display="Password"/>
    <field name="submit" key="submit" display="Login" value="" id="uuid-DCF7E9A6-1990-11EA-A23B-5CE1C2841434" attrs="" widget="submit"/>
  </form>
</response>