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" method="post" encoding="&#x2713;" uri="" uuid="B7EB5D92-7E55-11F1-9217-26222D3515A0">
    <field display="Username" value="" key="username" attrs="" widget="text" name="username" id="uuid-B7EB92E4-7E55-11F1-9217-26222D3515A0"/>
    <field attrs="" name="password" key="password" widget="password" id="uuid-B7EBDBFA-7E55-11F1-9217-26222D3515A0" display="Password"/>
    <field value="" display="Login" id="uuid-B7EC26C8-7E55-11F1-9217-26222D3515A0" attrs="" name="submit" key="submit" widget="submit"/>
  </form>
</response>