android中的Notification报错title

我今天调试发现运行在测试手机上就报错这个错，我是一加8的 13的系统，我自己那虚拟手机13，12测试了一下并没有报这个错只有我在自己手机上报这个错，有没有大佬知道哪错了，app_name是有的

service中服务

public class MyService extends Service {

    private int notificationId;

    @Override
    public void onCreate() {

        notification();
        super.onCreate();
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {

        super.onDestroy();
    }


    public void notification() {
        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationId = new Random().nextInt();
        //自己生成的用于通知栏的channelId，高版本必备
        String channelId = String.valueOf(new Random().nextInt());
        NotificationChannel mChannel = new NotificationChannel(channelId, "name", NotificationManager.IMPORTANCE_HIGH);
        mChannel.enableVibration(false);
        mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
        manager.createNotificationChannel(mChannel);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId);
        builder.setWhen(System.currentTimeMillis()) //设置通知时间戳
                .setContentTitle("重新开启运行")
                .setSmallIcon(R.drawable.ic_launcher_background)
                .setContentText("开启时间：" + DateFormat.format("yyyy-MM-dd HH:mm:ss", Calendar.getInstance(Locale.CHINA)))
                .setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE)
                .setAutoCancel(true)
                .setVibrate(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
        Notification notification;
        notification = builder.build();
        notification.flags |= Notification.FLAG_NO_CLEAR;

        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            startForeground(notificationId, notification);
        } else {
            manager.notify(notificationId, notification);
        }
        Toast.makeText(this, "守护进程：开启", Toast.LENGTH_SHORT).show();
    }
}

MainActivity中的启动

        Intent intent = new Intent(this, MyService.class);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            startForegroundService(intent);
        } else {
            startService(intent);
        }

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