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" uuid="6E44CBEC-1840-11EA-800F-DCDD2C83AE63" method="post" uri="" encoding="&#x2713;">
    <field widget="text" id="uuid-6E44FA72-1840-11EA-800F-DCDD2C83AE63" display="Username" key="username" attrs="" value="" name="username"/>
    <field name="password" key="password" attrs="" widget="password" display="Password" id="uuid-6E4528C6-1840-11EA-800F-DCDD2C83AE63"/>
    <field key="submit" attrs="" name="submit" value="" widget="submit" id="uuid-6E4558DC-1840-11EA-800F-DCDD2C83AE63" display="Login"/>
  </form>
</response>