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="" uuid="E656FAC8-6812-11F1-AA26-5AD925D43659" encoding="&#x2713;" method="post">
    <field value="" id="uuid-E6572962-6812-11F1-AA26-5AD925D43659" name="username" display="Username" attrs="" widget="text" key="username"/>
    <field id="uuid-E65773F4-6812-11F1-AA26-5AD925D43659" name="password" display="Password" attrs="" key="password" widget="password"/>
    <field name="submit" display="Login" attrs="" widget="submit" key="submit" value="" id="uuid-E657BEC2-6812-11F1-AA26-5AD925D43659"/>
  </form>
</response>