cant load asset from firebase storage to unity

Question

I am creating an augmented reality app using vuforia and unity. i have uploaded my assetbundle to firebase storage and i want to retrieve a 3d model saved inside it and load it as a child on my image target game object but it i cant retrieve it.i also installed firebase unity sdk.

using Firebase;
using Firebase.Storage;
using System.Threading.Tasks;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using System;
using UnityEngine.Networking;
using UnityEngine.UI;

public class loadmodel2 : MonoBehaviour
{
    public GameObject test;

    void Start()
    {
        FirebaseStorage storage = FirebaseStorage.DefaultInstance;

        Firebase.Storage.StorageReference reference =storage.GetReferenceFromUrl("gs://fit-union-221609.appspot.com/assettest1/myasset");

        reference.GetDownloadUrlAsync().ContinueWith((Task<Uri> task) => {
            if (!task.IsFaulted && !task.IsCanceled)
            {
                Debug.Log("Download URL: " + task.Result);
                // ... now download the file via WWW or UnityWebRequest.
                StartCoroutine(Loadcoroutine());
            }
        });
    }

    IEnumerator Loadcoroutine()
    {
        string url = "gs://fit-union-221609.appspot.com/assettest1/myasset";
        WWW www = new WWW(url);
        while (!www.isDone)
            yield return null;
        AssetBundle myasset = www.assetBundle;

        GameObject mya1 = myasset.LoadAsset("Barbarian Variant") as GameObject;

        Instantiate(mya1).transform.parent = test.transform;
    }
}

i created a new asset bundle with the same name "myasset" and uploaded it to firebase storage ialso changed the name of the 3d model to "BarbarianVariant" removing the space

in here i have enabled loadmodel2 script in the main camera and for the test game object i assigned maincamera.you can also see the output i get in the console

Answer 1

First of all your component loadmodel2 is disabled in the Inspector so its Start will never be called ...

---

I'm no Firebase expert but you first use GetDownloadUrlAsync and then anyway never use the result but start a new UnityWebRequest for downloading it from the same reference URL.

Don't you rather want to use the retrieved download URL from task.Result like e.g.

StartCoroutine(Loadcoroutine(task.Result));

...

IEnumerator Loadcoroutine(Uri uri)
{
    ...
}

---

Then note that WWW(obsolete) != UnityWebRequest!

What you want to do is probably rather using UnityWebRequestAssetBundle.GetAssetBundle (or in former versions UnityWebRequest.GetAssetBundle)

IEnumerator Loadcoroutine(Uri uri)
{
    using(var www = UnityWebRequestAssetBundle.GetAssetBundle(uri))
    {
        yield return www.SendWebRequest();

        if(www.isNetworkError || www.isHttpError) 
        {
            Debug.Log(www.error);
        }
        else 
        {
            AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(www);

            // Make sure this path is correct! Afaik it should at least start with "Assets/..."
            var mya1 =  bundle.LoadAssetAsync<GameObject>("Barbarian Variant");
            yield return mya1;

            var obj = Instantiate((GameObject)mya1.asset);
            obj.transform.parent = test.transform;
        }
    }
}

In general I would also avoid spaces in GameObject names.