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="" key="login" encoding="&#x2713;" method="post" uuid="90AD20A6-159D-11F1-A8A1-5F9F0C0019C7">
    <field id="uuid-90AD4EFA-159D-11F1-A8A1-5F9F0C0019C7" display="Username" attrs="" value="" key="username" name="username" widget="text"/>
    <field name="password" widget="password" key="password" attrs="" display="Password" id="uuid-90AD9928-159D-11F1-A8A1-5F9F0C0019C7"/>
    <field attrs="" display="Login" id="uuid-90ADE658-159D-11F1-A8A1-5F9F0C0019C7" widget="submit" name="submit" key="submit" value=""/>
  </form>
</response>