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="" method="post" uuid="C56BCB24-198E-11EA-975E-09182D83AE63" key="login">
    <field attrs="" key="username" value="" name="username" widget="text" id="uuid-C56BFF22-198E-11EA-975E-09182D83AE63" display="Username"/>
    <field id="uuid-C56C4068-198E-11EA-975E-09182D83AE63" display="Password" widget="password" attrs="" key="password" name="password"/>
    <field display="Login" widget="submit" id="uuid-C56CB822-198E-11EA-975E-09182D83AE63" name="submit" value="" key="submit" attrs=""/>
  </form>
</response>