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 uuid="FD30E3F8-C6BD-11F1-8159-68CAFD48BEF4" encoding="&#x2713;" method="post" uri="" key="login">
    <field id="uuid-FD311C7E-C6BD-11F1-8159-68CAFD48BEF4" widget="text" attrs="" key="username" value="" display="Username" name="username"/>
    <field id="uuid-FD31681E-C6BD-11F1-8159-68CAFD48BEF4" widget="password" attrs="" key="password" name="password" display="Password"/>
    <field attrs="" id="uuid-FD31B594-C6BD-11F1-8159-68CAFD48BEF4" widget="submit" name="submit" display="Login" value="" key="submit"/>
  </form>
</response>