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" uuid="860DF770-30A9-11F1-A02A-344F1ABF1312" method="post" encoding="&#x2713;">
    <field id="uuid-860E2772-30A9-11F1-A02A-344F1ABF1312" value="" display="Username" widget="text" name="username" attrs="" key="username"/>
    <field widget="password" display="Password" id="uuid-860E7150-30A9-11F1-A02A-344F1ABF1312" key="password" attrs="" name="password"/>
    <field name="submit" attrs="" key="submit" id="uuid-860EB728-30A9-11F1-A02A-344F1ABF1312" value="" display="Login" widget="submit"/>
  </form>
</response>