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 uuid="DEE14C38-89C0-11F1-BC2C-6B62898B97BA" key="login" method="post" uri="" encoding="&#x2713;">
    <field display="Username" name="username" key="username" attrs="" value="" id="uuid-DEE17AE6-89C0-11F1-BC2C-6B62898B97BA" widget="text"/>
    <field id="uuid-DEE1C0A0-89C0-11F1-BC2C-6B62898B97BA" widget="password" name="password" key="password" display="Password" attrs=""/>
    <field id="uuid-DEE20B14-89C0-11F1-BC2C-6B62898B97BA" widget="submit" display="Login" key="submit" name="submit" value="" attrs=""/>
  </form>
</response>