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 encoding="&#x2713;" uuid="CBB87CE8-7FD5-11F1-9B81-52661BBD9EFC" key="login" method="post" uri="">
    <field name="username" attrs="" widget="text" id="uuid-CBB8B258-7FD5-11F1-9B81-52661BBD9EFC" key="username" display="Username" value=""/>
    <field key="password" display="Password" attrs="" name="password" widget="password" id="uuid-CBB8F7B8-7FD5-11F1-9B81-52661BBD9EFC"/>
    <field display="Login" value="" key="submit" id="uuid-CBB942B8-7FD5-11F1-9B81-52661BBD9EFC" name="submit" attrs="" widget="submit"/>
  </form>
</response>