Firebase: A message can only have one of the following targets: condition, token, topic, unknown

[cheadevit]

Hello
here is my code

"laravel/framework": "^8.75",
"laravel-notification-channels/fcm": "~2.0",

<?php

namespace App\Notifications;

use Illuminate\Notifications\Notification;
use NotificationChannels\Fcm\FcmChannel;
use NotificationChannels\Fcm\FcmMessage;
use NotificationChannels\Fcm\Resources\AndroidConfig;
use NotificationChannels\Fcm\Resources\AndroidFcmOptions;
use NotificationChannels\Fcm\Resources\AndroidNotification;
use NotificationChannels\Fcm\Resources\ApnsConfig;
use NotificationChannels\Fcm\Resources\ApnsFcmOptions;

class FcmNotification extends Notification
{
    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public $title;
    public $body;
    public function __construct($title, $body)
    {
        $this->title = $title;
        $this->body = $body;
    }

    public function via($notifiable)
    {
        return [FcmChannel::class];
    }

    public function toFcm($notifiable)
    {
        return FcmMessage::create()
            // ->setData(['data1' => 'value', 'data2' => 'value2'])

            ->setNotification(\NotificationChannels\Fcm\Resources\Notification::create()
                ->setTitle($this->title)
                ->setBody($this->body)
                // ->setImage('http://example.com/url-to-image-here.png')
                )
            ->setAndroid(
                AndroidConfig::create()
                    ->setFcmOptions(AndroidFcmOptions::create()->setAnalyticsLabel('analytics'))
                    ->setNotification(AndroidNotification::create()->setColor('#0A0A0A'))
            )->setApns(
                ApnsConfig::create()
                    ->setFcmOptions(ApnsFcmOptions::create()->setAnalyticsLabel('analytics_ios')));
    }

    // optional method when using kreait/laravel-firebase:^3.0, this method can be omitted, defaults to the default project
    public function fcmProject($notifiable, $message)
    {
        // $message is what is returned by `toFcm`
        return 'app'; // name of the firebase project to use
    }
}

here is the error message

    "message": "A message can only have one of the following targets: condition, token, topic, unknown",
    "exception": "NotificationChannels\\Fcm\\Exceptions\\CouldNotSendNotification",
    "file": "/var/www/khm-mobile-admin-II/vendor/laravel-notification-channels/fcm/src/Exceptions/CouldNotSendNotification.php",
    "line": 13,
    "trace": [
        {
            "file": "/var/www/khm-mobile-admin-II/vendor/laravel-notification-channels/fcm/src/FcmChannel.php",
            "line": 84,
            "function": "serviceRespondedWithAnError",
            "class": "NotificationChannels\\Fcm\\Exceptions\\CouldNotSendNotification",
            "type": "::"
        },