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" encoding="&#x2713;" method="post" uri="" uuid="623306D6-CF84-11F1-BD69-FEF849691810">
    <field value="" display="Username" key="username" extra="" id="uuid-62333B56-CF84-11F1-BD69-FEF849691810" widget="text" attrs="" name="username"/>
    <field key="password" name="password" widget="password" attrs="" extra="" display="Password" id="uuid-6233811A-CF84-11F1-BD69-FEF849691810"/>
    <field extra="" id="uuid-6233CB98-CF84-11F1-BD69-FEF849691810" attrs="" widget="submit" name="submit" value="" display="Login" key="submit"/>
  </form>
</response>