sub affiliate_create {
  my ($app, $err) = @_;
  
  # render the 'shell' and 'core' of the webpage
  my ($s, $o) = $app->tree_guts_common
     ('Admin::Shell', 'Admin::Aff::Create');

  # render (or remove) the error feedback
  $o->error_feedback($err);
  
$s;

}