Getting error - Unsupported message type, when using sendMulticast about laravel-firebase HOT 2 CLOSED

$messageData = [
    'notification' => [ // <- This is the difference to your code
        'title' => __('mobile_notifications_messages.posts.' . $eventName, [
            $author,
            $post->title,
        ]),
        'body' => 'Something'
    ]
];
$message = CloudMessage::fromArray($messageData);

// Note that this variable is named $notification and passed
// to a new $message below
$notification = [
    'title' => __('mobile_notifications_messages.posts.' . $eventName, [
        $author,
        $post->title,
    ]),
    'body' => 'Something'
];

$message = CloudMessage::new()->withNotification($notification);