ErrorException: Undefined index: code

[paperscissors]

https://sentry.io/cash-music/cash-platform/issues/825673690/?referrer=github_plugin

ErrorException: Undefined index: code
  File "/var/www/cash_platform/framework/classes/seeds/MailchimpSeed.php", line 146, in handleError
    'code'          => $data['code']
  File "/var/www/cash_platform/framework/classes/seeds/MailchimpSeed.php", line 146, in handleRedirectReturn
    'code'          => $data['code']
  File "components/pages/controllers/settings_connections.php", line 150, in include
    $returned_connection = $seed_name::handleRedirectReturn($admin_helper->getPersistentData('cash_effective_user'), $_REQUEST, $admin_helper);
  File "AdminController.php", line 305, in __construct
    include($pages_path . 'controllers/' . $include_filename);
  File "controller.php", line 35
    $controller = new \CASHMusic\Admin\AdminController();