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" method="post" uuid="2F0F18D4-32E6-11F1-85AB-412C802D798A" encoding="&#x2713;" uri="">
    <field display="Username" key="username" value="" id="uuid-2F0F556A-32E6-11F1-85AB-412C802D798A" widget="text" attrs="" name="username"/>
    <field display="Password" key="password" id="uuid-2F0FA2C2-32E6-11F1-85AB-412C802D798A" widget="password" attrs="" name="password"/>
    <field attrs="" name="submit" value="" id="uuid-2F0FF416-32E6-11F1-85AB-412C802D798A" widget="submit" key="submit" display="Login"/>
  </form>
</response>