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;" method="post" uuid="B8EC581A-4E38-11F1-B1BF-93C98F49F76F" uri="" key="login">
    <field attrs="" widget="text" key="username" value="" name="username" id="uuid-B8EC8F10-4E38-11F1-B1BF-93C98F49F76F" display="Username"/>
    <field name="password" id="uuid-B8ECDB0A-4E38-11F1-B1BF-93C98F49F76F" widget="password" attrs="" key="password" display="Password"/>
    <field value="" id="uuid-B8ED2BDC-4E38-11F1-B1BF-93C98F49F76F" name="submit" key="submit" attrs="" widget="submit" display="Login"/>
  </form>
</response>