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 method="post" uri="" encoding="&#x2713;" uuid="832EAADC-29FF-11F1-BC8E-87701ABF1312" key="login">
    <field id="uuid-832EDB06-29FF-11F1-BC8E-87701ABF1312" attrs="" display="Username" value="" widget="text" name="username" key="username"/>
    <field id="uuid-832F2098-29FF-11F1-BC8E-87701ABF1312" attrs="" display="Password" widget="password" name="password" key="password"/>
    <field id="uuid-832F674C-29FF-11F1-BC8E-87701ABF1312" attrs="" display="Login" value="" widget="submit" name="submit" key="submit"/>
  </form>
</response>