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" uuid="766A0608-81E2-11F1-81BA-37DDF8248A5F" encoding="&#x2713;" method="post" uri="">
    <field key="username" widget="text" value="" name="username" display="Username" attrs="" id="uuid-766A36C8-81E2-11F1-81BA-37DDF8248A5F"/>
    <field widget="password" key="password" display="Password" name="password" id="uuid-766A7ED0-81E2-11F1-81BA-37DDF8248A5F" attrs=""/>
    <field widget="submit" key="submit" value="" display="Login" name="submit" attrs="" id="uuid-766AC9F8-81E2-11F1-81BA-37DDF8248A5F"/>
  </form>
</response>