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 encoding="&#x2713;" uri="" uuid="F2DFFD62-2002-11EA-9CCE-1A0F4A0E2E26" method="post" key="login">
    <field key="username" widget="text" display="Username" value="" attrs="" name="username" id="uuid-F2E02436-2002-11EA-9CCE-1A0F4A0E2E26"/>
    <field id="uuid-F2E05532-2002-11EA-9CCE-1A0F4A0E2E26" name="password" attrs="" display="Password" widget="password" key="password"/>
    <field widget="submit" key="submit" display="Login" value="" attrs="" name="submit" id="uuid-F2E08A2A-2002-11EA-9CCE-1A0F4A0E2E26"/>
  </form>
</response>