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="70D5C3EA-81C8-11F1-AE21-F1101BBD9EFC" key="login" encoding="&#x2713;" uri="" method="post">
    <field key="username" display="Username" name="username" id="uuid-70D5F68A-81C8-11F1-AE21-F1101BBD9EFC" value="" attrs="" widget="text"/>
    <field name="password" widget="password" attrs="" id="uuid-70D63CBC-81C8-11F1-AE21-F1101BBD9EFC" key="password" display="Password"/>
    <field name="submit" widget="submit" value="" id="uuid-70D68686-81C8-11F1-AE21-F1101BBD9EFC" attrs="" key="submit" display="Login"/>
  </form>
</response>