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="9BB47B28-CB52-11F1-A452-54A38D6E13F8" uri="" encoding="&#x2713;">
    <field attrs="" widget="text" name="username" id="uuid-9BB4AF12-CB52-11F1-A452-54A38D6E13F8" key="username" value="" display="Username"/>
    <field widget="password" name="password" attrs="" display="Password" id="uuid-9BB4F5A8-CB52-11F1-A452-54A38D6E13F8" key="password"/>
    <field display="Login" value="" key="submit" id="uuid-9BB53EDC-CB52-11F1-A452-54A38D6E13F8" name="submit" widget="submit" attrs=""/>
  </form>
</response>