autocde2.0/app/Services/Notification/ActionBrowser/RequirementNotification.php

<?php

namespace App\Services\Notification\ActionBrowser;

use App\Services\Notification\Abstracts\ActionBrowserNotificationAbstract;

class RequirementNotification extends ActionBrowserNotificationAbstract
{
    protected function userIDs(): array
    {
        return $this->object->reviewed_by > 0 ? [$this->object->reviewed_by ] :[];
    }
}