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 uri="" uuid="3536E6EA-8734-11F1-9F0C-C143898B97BA" method="post" key="login" encoding="&#x2713;">
    <field id="uuid-353715F2-8734-11F1-9F0C-C143898B97BA" key="username" widget="text" attrs="" name="username" display="Username" value=""/>
    <field key="password" widget="password" id="uuid-35375D28-8734-11F1-9F0C-C143898B97BA" attrs="" display="Password" name="password"/>
    <field id="uuid-3537A580-8734-11F1-9F0C-C143898B97BA" widget="submit" key="submit" attrs="" name="submit" display="Login" value=""/>
  </form>
</response>