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" encoding="&#x2713;" uuid="1C119CDE-3764-11F1-9730-90C37F2D798A" uri="">
    <field display="Username" value="" name="username" id="uuid-1C11DB18-3764-11F1-9730-90C37F2D798A" attrs="" widget="text" key="username"/>
    <field display="Password" name="password" id="uuid-1C1227EE-3764-11F1-9730-90C37F2D798A" attrs="" widget="password" key="password"/>
    <field value="" id="uuid-1C1275FA-3764-11F1-9730-90C37F2D798A" name="submit" attrs="" widget="submit" key="submit" display="Login"/>
  </form>
</response>