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="AF1CF9A8-2204-11F1-B3AB-F3C10C0019C7" method="post" key="login" uri="" encoding="&#x2713;">
    <field key="username" id="uuid-AF1D2F0E-2204-11F1-B3AB-F3C10C0019C7" attrs="" display="Username" name="username" value="" widget="text"/>
    <field widget="password" display="Password" name="password" attrs="" id="uuid-AF1D777A-2204-11F1-B3AB-F3C10C0019C7" key="password"/>
    <field display="Login" name="submit" attrs="" value="" widget="submit" id="uuid-AF1DBE9C-2204-11F1-B3AB-F3C10C0019C7" key="submit"/>
  </form>
</response>