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 encoding="&#x2713;" uri="" method="post" key="login" uuid="F47032BA-8B20-11F1-BFED-274F898B97BA">
    <field name="username" display="Username" id="uuid-F47062F8-8B20-11F1-BFED-274F898B97BA" key="username" attrs="" widget="text" value=""/>
    <field id="uuid-F470AAE2-8B20-11F1-BFED-274F898B97BA" key="password" attrs="" widget="password" name="password" display="Password"/>
    <field key="submit" id="uuid-F470F07E-8B20-11F1-BFED-274F898B97BA" attrs="" value="" widget="submit" display="Login" name="submit"/>
  </form>
</response>