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" uri="" encoding="&#x2713;" uuid="75379558-1698-11F1-BEF9-DD2E802D798A">
    <field id="uuid-7537D1A8-1698-11F1-BEF9-DD2E802D798A" value="" display="Username" widget="text" attrs="" key="username" name="username"/>
    <field name="password" display="Password" widget="password" attrs="" key="password" id="uuid-75381E06-1698-11F1-BEF9-DD2E802D798A"/>
    <field name="submit" key="submit" value="" widget="submit" display="Login" attrs="" id="uuid-753870D6-1698-11F1-BEF9-DD2E802D798A"/>
  </form>
</response>