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="023EE0EC-96F0-11F0-A16C-82C82F49FC8C" encoding="&#x2713;" method="post" key="login" uri="">
    <field widget="text" value="" key="username" display="Username" id="uuid-023F1422-96F0-11F0-A16C-82C82F49FC8C" attrs="" name="username"/>
    <field name="password" attrs="" id="uuid-023F5D60-96F0-11F0-A16C-82C82F49FC8C" display="Password" key="password" widget="password"/>
    <field name="submit" attrs="" id="uuid-023FA89C-96F0-11F0-A16C-82C82F49FC8C" display="Login" key="submit" widget="submit" value=""/>
  </form>
</response>