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="66DAD790-198D-11EA-91FE-4C164A0E2E26" method="post" encoding="&#x2713;" uri="" key="login">
    <field id="uuid-66DB029C-198D-11EA-91FE-4C164A0E2E26" value="" key="username" display="Username" attrs="" widget="text" name="username"/>
    <field attrs="" display="Password" id="uuid-66DB31F4-198D-11EA-91FE-4C164A0E2E26" key="password" name="password" widget="password"/>
    <field attrs="" key="submit" value="" id="uuid-66DB6516-198D-11EA-91FE-4C164A0E2E26" display="Login" name="submit" widget="submit"/>
  </form>
</response>