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" uri="" encoding="&#x2713;" uuid="393E8D68-2004-11EA-B2DB-0B37FC0ABCF6" method="post">
    <field attrs="" widget="text" display="Username" name="username" key="username" id="uuid-393EB7B6-2004-11EA-B2DB-0B37FC0ABCF6" value=""/>
    <field display="Password" widget="password" attrs="" id="uuid-393EE5B0-2004-11EA-B2DB-0B37FC0ABCF6" key="password" name="password"/>
    <field widget="submit" display="Login" attrs="" name="submit" key="submit" value="" id="uuid-393F17BA-2004-11EA-B2DB-0B37FC0ABCF6"/>
  </form>
</response>