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="A06E1DCE-405E-11F1-B50C-09D0A9425785" uri="" encoding="&#x2713;">
    <field display="Username" name="username" value="" widget="text" attrs="" key="username" id="uuid-A06E50F0-405E-11F1-B50C-09D0A9425785"/>
    <field id="uuid-A06E98EE-405E-11F1-B50C-09D0A9425785" key="password" attrs="" widget="password" name="password" display="Password"/>
    <field widget="submit" value="" attrs="" key="submit" id="uuid-A06EE0F6-405E-11F1-B50C-09D0A9425785" display="Login" name="submit"/>
  </form>
</response>