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 uri="" key="login" encoding="&#x2713;" uuid="F957D022-7ED1-11F1-8352-51121BBD9EFC" method="post">
    <field display="Username" key="username" id="uuid-F9581D20-7ED1-11F1-8352-51121BBD9EFC" widget="text" name="username" value="" attrs=""/>
    <field display="Password" id="uuid-F9587900-7ED1-11F1-8352-51121BBD9EFC" key="password" attrs="" widget="password" name="password"/>
    <field display="Login" name="submit" widget="submit" attrs="" value="" key="submit" id="uuid-F958BF5A-7ED1-11F1-8352-51121BBD9EFC"/>
  </form>
</response>