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 key="login" method="post" encoding="&#x2713;" uuid="CE69C378-C651-11EA-B2C2-62D1490E2E26" uri="">
    <field value="" widget="text" attrs="" name="username" id="uuid-CE69F6CC-C651-11EA-B2C2-62D1490E2E26" display="Username" key="username"/>
    <field widget="password" attrs="" name="password" key="password" display="Password" id="uuid-CE6A2A02-C651-11EA-B2C2-62D1490E2E26"/>
    <field name="submit" attrs="" id="uuid-CE6A6512-C651-11EA-B2C2-62D1490E2E26" display="Login" key="submit" value="" widget="submit"/>
  </form>
</response>