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="C84256F8-1991-11EA-BEA4-5CE1C2841434" method="post" encoding="&#x2713;" key="login" uri="">
    <field widget="text" attrs="" id="uuid-C8428916-1991-11EA-BEA4-5CE1C2841434" display="Username" value="" key="username" name="username"/>
    <field widget="password" attrs="" id="uuid-C842C016-1991-11EA-BEA4-5CE1C2841434" display="Password" key="password" name="password"/>
    <field id="uuid-C842F6A8-1991-11EA-BEA4-5CE1C2841434" attrs="" widget="submit" key="submit" name="submit" display="Login" value=""/>
  </form>
</response>