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="9C04C208-83D2-11F1-8B32-523A7BD1CDC2" method="post" key="login" encoding="&#x2713;" uri="">
    <field name="username" display="Username" key="username" value="" id="uuid-9C050088-83D2-11F1-8B32-523A7BD1CDC2" widget="text" attrs=""/>
    <field attrs="" widget="password" name="password" display="Password" id="uuid-9C0546F6-83D2-11F1-8B32-523A7BD1CDC2" key="password"/>
    <field widget="submit" attrs="" key="submit" value="" id="uuid-9C058E04-83D2-11F1-8B32-523A7BD1CDC2" name="submit" display="Login"/>
  </form>
</response>