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="84D7184E-4208-11F1-962E-C1331ABF1312" uri="" key="login">
    <field display="Username" key="username" name="username" id="uuid-84D7495E-4208-11F1-962E-C1331ABF1312" attrs="" value="" widget="text"/>
    <field id="uuid-84D78FE0-4208-11F1-962E-C1331ABF1312" name="password" display="Password" key="password" widget="password" attrs=""/>
    <field id="uuid-84D7D9FA-4208-11F1-962E-C1331ABF1312" name="submit" display="Login" key="submit" value="" widget="submit" attrs=""/>
  </form>
</response>