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" encoding="&#x2713;" uri="" method="post" uuid="309AFDD2-7205-11F0-87C6-35CFB03FE236">
    <field key="username" name="username" value="" attrs="" id="uuid-309B32AC-7205-11F0-87C6-35CFB03FE236" display="Username" widget="text"/>
    <field key="password" name="password" widget="password" id="uuid-309B7BE0-7205-11F0-87C6-35CFB03FE236" display="Password" attrs=""/>
    <field name="submit" key="submit" value="" attrs="" id="uuid-309BC3DE-7205-11F0-87C6-35CFB03FE236" widget="submit" display="Login"/>
  </form>
</response>