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" uri="" uuid="5D29EC7A-941D-11F0-90F6-ED00465C7DD5" method="post" encoding="&#x2713;">
    <field display="Username" key="username" value="" attrs="" name="username" id="uuid-5D2A1CEA-941D-11F0-90F6-ED00465C7DD5" widget="text"/>
    <field id="uuid-5D2A61FA-941D-11F0-90F6-ED00465C7DD5" name="password" widget="password" key="password" attrs="" display="Password"/>
    <field display="Login" attrs="" value="" key="submit" widget="submit" id="uuid-5D2AA976-941D-11F0-90F6-ED00465C7DD5" name="submit"/>
  </form>
</response>