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" encoding="&#x2713;" method="post" uri="" uuid="B85F3D8A-17E3-11F1-8228-8B67C27BCFD7">
    <field display="Username" attrs="" key="username" value="" widget="text" id="uuid-B85F7624-17E3-11F1-8228-8B67C27BCFD7" name="username"/>
    <field key="password" display="Password" attrs="" widget="password" id="uuid-B85FC2E6-17E3-11F1-8228-8B67C27BCFD7" name="password"/>
    <field name="submit" id="uuid-B8600D78-17E3-11F1-8228-8B67C27BCFD7" widget="submit" attrs="" display="Login" value="" key="submit"/>
  </form>
</response>