Загрузка GameObject из AssetBundle приводит к сбою приложения

Question

У меня есть приложение AR, в котором у меня есть несколько отслеживаемых изображений и определенный c GameObject в AssetBundle, связанный с ними.

Когда я запускаю свое приложение и обнаруживаю изображение, оно работает как положено Однако, когда я go вкл, чтобы обнаружить другое изображение, приложение вылетает.

Вот мой код:

[RequireComponent(typeof(ARTrackedImageManager))]
public class MultiTrackedImageManager : MonoBehaviour
{

    public static MultiTrackedImageManager Instance { get { return instance; } }
    private static MultiTrackedImageManager instance;

    private ARTrackedImageManager m_TrackedImageManager;

    private GameObject curobject;
    private string PREFABFOLDER = "Prefabs/";

    AssetBundle myLoadedAssetBundle;
    private string imageName;
    private GameObject prefabToLoad;

    private GameObject prefab;
    public List<MultiTrackedImage> Images = new List<MultiTrackedImage>();

    private void Awake()
    {
        if (instance != null) { Destroy(instance); }
        instance = this;
        m_TrackedImageManager = GetComponent<ARTrackedImageManager>();
        curobject = null;
        LoadAssetFromBundle();
    }

    void OnEnable()
    {
        m_TrackedImageManager.trackedImagesChanged += OnTrackedImagesChanged;
    }

    void OnDisable()
    {
        m_TrackedImageManager.trackedImagesChanged -= OnTrackedImagesChanged;
    }

    void OnTrackedImagesChanged(ARTrackedImagesChangedEventArgs eventArgs)
    {

        foreach (var trackedImage in eventArgs.updated)
        {
            OnImageUpdated(trackedImage.referenceImage.texture.name, trackedImage.name, trackedImage);
        }

        foreach (var trackedImage in eventArgs.added)
        {
            OnImageAdded(trackedImage.referenceImage.texture.name, trackedImage.name, trackedImage);
        }
    }

    public void OnImageUpdated(string textureName, string name, ARTrackedImage m_ARTrackedImage)
    {

        for (int i = 0; i < Images.Count; i++)
        {
            //if we have a match for the object and we have regained tracking and the current object is not the one for the trigger we just found
            if (m_ARTrackedImage.trackingState == TrackingState.Tracking)
            {

                //this checks to make sure we are tracking the right image target
                if (!string.Equals(Images[i].target.name, textureName)) { continue; }

                //this checks to see if our current object is equal to the name of the image target so we don't delete and duplicate
                if (string.Equals(curobject.name, Images[i].target.name)) { continue; }

                //for some reason we are getting updates from non visible targets
                if (curobject != null) { Destroy(curobject); }

                GameObject go = GameObject.Find(name);

                imageName = Images[i].path;
                //InstantiateObjectFromBundle(imageName);
                if (prefab != null) { Destroy(prefab);  }
                prefab = myLoadedAssetBundle.LoadAsset<GameObject>(imageName);
                Resources.UnloadUnusedAssets();

                //Instantiate the prefab with the position of go
                GameObject target = Instantiate(prefab, go.transform.position, Quaternion.identity);

                curobject = target;
                curobject.name = Images[i].target.name;

                TextManager.s.txtContent1 = Images[i].txt1 == "" ? "  " : Images[i].txt1;
                TextManager.s.txtContent2 = Images[i].txt2 == "" ? "  " : Images[i].txt2;
                TextManager.s.ResetText();

                Images[i].go = go;
                target.transform.rotation = go.transform.rotation;
                target.transform.SetParent(go.transform);
                target.transform.localPosition = Vector3.zero;
            }
        }
    }

    public void OnImageAdded(string textureName, string name, ARTrackedImage m_ARTrackedImage)
    {

        //PrefabManager.s.ClearPrefabs();
        for (int i = 0; i < Images.Count; i++)
        {
            if (string.Equals(Images[i].target.name, textureName) && Images[i].go == null)
            {
                //Destroy the existing AR Animation
                if (curobject != null) { Destroy(curobject); }

                GameObject go = GameObject.Find(name);

                // Find the prefab game object by loading it from the PREFABFolder with the name matching the .path from Images[i]
                //GameObject prefab = Resources.Load($"{PREFABFOLDER}{Images[i].path}") as GameObject;
                imageName = Images[i].path;

                //InstantiateObjectFromBundle(imageName);
                if (prefab != null) { Destroy(prefab); }
                prefab = myLoadedAssetBundle.LoadAsset<GameObject>(imageName);
                Resources.UnloadUnusedAssets();

                //Instantiate the prefab with the position of go
                GameObject target = Instantiate(prefab, go.transform.position, Quaternion.identity);

                curobject = target;
                curobject.name = Images[i].target.name;

                TextManager.s.txtContent1 = Images[i].txt1 == "" ? "  " : Images[i].txt1;
                TextManager.s.txtContent2 = Images[i].txt2 == "" ? "  " : Images[i].txt2;
                TextManager.s.ResetText();

                Images[i].go = go;
                target.transform.rotation = go.transform.rotation;
                target.transform.SetParent(go.transform);
                target.transform.localPosition = Vector3.zero;
            }
        }
    }

    void LoadAssetFromBundle()
    {
        StartCoroutine(DownloadAssetBundle());
    }

    IEnumerator DownloadAssetBundle()
    {
        var uwr = UnityWebRequestAssetBundle.GetAssetBundle("https://brain.rs/rkd/prefabbundletest");
        yield return uwr.SendWebRequest();

        if (uwr.isNetworkError || uwr.isHttpError)
        {
            Debug.Log(uwr.error);
        }
        else
        {
            // Get an asset from the bundle and instantiate it.
            myLoadedAssetBundle = DownloadHandlerAssetBundle.GetContent(uwr);
            if (myLoadedAssetBundle == null)
            {
                Debug.Log("Failed to load AssetBundle!");
            }
        }
    }
}