Trying to send a campaign and it fails because of it:
Version: Mailcoach 2.6.3
PHP 7.4.3
Spatie\Mailcoach\Exceptions\InvalidConfig: The class currently specified in the `mailcoach.actions.prepare_subject` key '' should be or extend `Spatie\Mailcoach\Actions\Campaigns\PrepareSubjectAction`. in /root/vendor/spatie/laravel-mailcoach/src/Exceptions/InvalidConfig.php:11
Trying to send a campaign and it fails because of it:
Version: Mailcoach 2.6.3 PHP 7.4.3