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="" key="login" encoding="&#x2713;" uuid="B848D1AE-183E-11EA-8F6F-8124C3841434" method="post">
    <field widget="text" attrs="" id="uuid-B84C72F0-183E-11EA-8F6F-8124C3841434" value="" display="Username" name="username" key="username"/>
    <field widget="password" id="uuid-B84CA536-183E-11EA-8F6F-8124C3841434" attrs="" display="Password" key="password" name="password"/>
    <field id="uuid-B84CE014-183E-11EA-8F6F-8124C3841434" attrs="" widget="submit" name="submit" key="submit" value="" display="Login"/>
  </form>
</response>