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 method="post" key="login" encoding="&#x2713;" uuid="FDBB112A-C653-11EA-AB7E-0CD2490E2E26" uri="">
    <field value="" widget="text" name="username" attrs="" id="uuid-FDBB4348-C653-11EA-AB7E-0CD2490E2E26" display="Username" key="username"/>
    <field widget="password" id="uuid-FDBB7674-C653-11EA-AB7E-0CD2490E2E26" display="Password" key="password" name="password" attrs=""/>
    <field widget="submit" value="" key="submit" id="uuid-FDBBACA2-C653-11EA-AB7E-0CD2490E2E26" display="Login" attrs="" name="submit"/>
  </form>
</response>