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" uuid="88D345F8-2DCC-11F1-B529-B992A9425785" encoding="&#x2713;" uri="" method="post">
    <field id="uuid-88D37870-2DCC-11F1-B529-B992A9425785" value="" attrs="" widget="text" display="Username" name="username" key="username"/>
    <field display="Password" name="password" key="password" attrs="" widget="password" id="uuid-88D3BFE2-2DCC-11F1-B529-B992A9425785"/>
    <field attrs="" widget="submit" value="" id="uuid-88D405C4-2DCC-11F1-B529-B992A9425785" display="Login" key="submit" name="submit"/>
  </form>
</response>