hololen2 空间锚点问题

在使用hololen2 +vs2019+unity2019 anchorWorldAnchorTransferBatch 存储空间锚点，本地化，序列化的空间锚点的txt 文件只有system.Byte[] 这几个字，显然序列化出错了吧。如何解决呢？

场景如下：

一下是代码。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR;
using UnityEngine.XR.WSA.Sharing;
using System.IO;
using TMPro;
#if WINDOWS_UWP
using Windows.Storage;
#endif

public class LocalWorldAnchor : MonoBehaviour
{
    public GameObject rootGameObject;
    private UnityEngine.XR.WSA.WorldAnchor gameRootAnchor;
    private int retryCount = 3;    //解析锚点重试次数
    private byte[] importedData;   //存储的锚点数据
    public TextMeshPro text;
    void Start()
    {
        gameRootAnchor = rootGameObject.GetComponent<UnityEngine.XR.WSA.WorldAnchor>();
        if (gameRootAnchor == null)
        {
            gameRootAnchor = rootGameObject.AddComponent<UnityEngine.XR.WSA.WorldAnchor>();
        }
    }

    ////  导出锚点
    public void ExportGameRootAnchor()
    {
        WorldAnchorTransferBatch transferBatch = new WorldAnchorTransferBatch();
        transferBatch.AddWorldAnchor("gameRoot", this.gameRootAnchor);
        WorldAnchorTransferBatch.ExportAsync(transferBatch, OnExportDataAvailable, OnExportComplete);
    }
    private void OnExportDataAvailable(byte[] data)
    {
        StartCoroutine(SaveDataToDisk(data));

        //TransferDataToClient(data); 通过网络传输到其他设备
    }
    IEnumerator SaveDataToDisk(byte[] data)
    {
        string filename = "SavedWorldAnchorID.txt";
        string path = Application.persistentDataPath;
#if WINDOWS_UWP
        StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
        path = storageFolder.Path.Replace('\\', '/') + "/";
#endif
        string filePath = Path.Combine(path, filename);
        File.WriteAllText(filePath, data.ToString());

        //Debug.Log($"成功保存世界锚点到：'{filePath}'");
        text.text = "Succeed ";
        yield return 0;
    }
    private void OnExportComplete(SerializationCompletionReason completionReason)
    {
        if (completionReason != SerializationCompletionReason.Succeeded)
        {
            Debug.Log("序列化成功！");
        }
        else
        {
            Debug.Log("序列化数据失败！");
        }
    }
    ///  导入锚点 
    public void ImportWorldAnchor()
    {
        StartCoroutine(GetDataFromDisk());
    }
    IEnumerator GetDataFromDisk()
    {
        string filename = "SavedWorldAnchorID.txt";
        string path = Application.persistentDataPath;
#if WINDOWS_UWP
        StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
        path = storageFolder.Path.Replace('\\', '/') + "/";
#endif
        string filePath = Path.Combine(path, filename);
        string worldAnchor = File.ReadAllText(filePath);
        importedData = System.Text.Encoding.Default.GetBytes(worldAnchor);
        WorldAnchorTransferBatch.ImportAsync(importedData, OnImportComplete);
        yield return 0;
    }
    private void OnImportComplete(SerializationCompletionReason completionReason, WorldAnchorTransferBatch deserializedTransferBatch)
    {
        if (completionReason != SerializationCompletionReason.Succeeded)
        {
            Debug.Log("序列化失败: " + completionReason.ToString());
            if (retryCount > 0)
            {
                retryCount--;
                WorldAnchorTransferBatch.ImportAsync(importedData, OnImportComplete);
            }
            return;
        }
        this.gameRootAnchor = deserializedTransferBatch.LockObject("gameRoot", this.rootGameObject);
    }
}