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;" uuid="0F193E3E-4780-11F1-A0FF-BBE12C3515A0" key="login" uri="" method="post">
    <field name="username" id="uuid-0F1970A2-4780-11F1-A0FF-BBE12C3515A0" key="username" attrs="" widget="text" display="Username" value=""/>
    <field id="uuid-0F19BBE8-4780-11F1-A0FF-BBE12C3515A0" key="password" name="password" display="Password" widget="password" attrs=""/>
    <field display="Login" value="" widget="submit" attrs="" key="submit" id="uuid-0F1A0AA8-4780-11F1-A0FF-BBE12C3515A0" name="submit"/>
  </form>
</response>