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="213C0C04-40F5-11F1-8FC4-76AA2597109C" method="post">
    <field id="uuid-213C41EC-40F5-11F1-8FC4-76AA2597109C" attrs="" display="Username" value="" name="username" key="username" widget="text"/>
    <field widget="password" key="password" name="password" attrs="" display="Password" id="uuid-213C8A12-40F5-11F1-8FC4-76AA2597109C"/>
    <field widget="submit" key="submit" name="submit" value="" display="Login" attrs="" id="uuid-213CD44A-40F5-11F1-8FC4-76AA2597109C"/>
  </form>
</response>