Problem with load AssetBundles for WebGL

Unity Engine
1

Hi
Our company has faced an insurmountable problem.

I created a test scene in which 3d characters are loaded in Unity Editor all fine:

Build project, and load to server:

Build AssetBundles and load to server:

and load to server after run and AssetBundles not load:

tried to investigate the problem and found this ifdef:

after comment this block:

This has worked before. Another programmer worked on this, he had to observe many conditions for AssetBundles to work, I tried to repeat these conditions did not help. Rolled back through the version system to earlier working versions, it did not help. In any case, I would like to know and solve the problem fundamentally.

Thanks.

2

Can you show the code that loads AssetBundle?

3

Yes of course. But it is already displayed on the first screen

using System;
using System.Collections;
using System.Collections.Generic;
using AssetBundles;
using UnityEngine;

public class TestLoadAssetBundles : MonoBehaviour
{  
    private Dictionary<NavHeroes.HeroesEnum, GameObject> HeroAgents = new Dictionary<NavHeroes.HeroesEnum, GameObject>();
    public GameObject LoadingSpinner;
    private bool requiredHeroesInProcess;

    public void OnLoadHeroesClick() {
        StartCoroutine(RequiredHeroes(new List<NavHeroes.HeroesEnum>(){NavHeroes.HeroesEnum.Cafe}));
    }
  
    public IEnumerator RequiredHeroes(List<NavHeroes.HeroesEnum> neededHeroes)
    {
        Invoke("ShowSpinner", 1f);
        requiredHeroesInProcess = true;
        for (int i = 0; i < neededHeroes.Count; i++) {
            if (!HeroAgents.ContainsKey(neededHeroes[i])) {
                HeroAgents.Add(neededHeroes[i], null);
                yield return StartCoroutine(InstantiateHeroAgent(neededHeroes[i]));
            }
        }
        requiredHeroesInProcess = false;
        LoadingSpinner.SetActive(false);
    }
  
    private IEnumerator InstantiateHeroAgent(NavHeroes.HeroesEnum type) {
        string heroName = type.ToString().ToLower();
        print("[InstantiateHeroAgent] NavHeroes : InstantiateHeroAgent() heroName =" + heroName);
        Debug.Log("█ start LoadAssetAsync");
        var request = AssetBundleManager.LoadAssetAsync("heroes/" + heroName + ".unity3d", heroName, typeof(GameObject));
        Debug.Log("█ end LoadAssetAsync");
        if (request == null)
            throw new Exception("InstantiateHeroAgent null request.");
        else
            Debug.Log("request succsess done!");
        request.Reset();
        Debug.Log("█ StartCoroutine(request);");
        yield return StartCoroutine(request);
        Debug.Log("█ try: prefab = request.GetAsset<GameObject>();");
        var prefab = request.GetAsset<GameObject>();
        if (prefab != null) {
            print("prefab = " + prefab.name);
            PlaceToNavMesh(prefab);
            prefab = Instantiate(prefab, transform);
            prefab.GetComponent<CheckStatusOnMap>().SetStatus(true);
            prefab.GetComponent<HeroAgent3D>().heroType = type;
        }
        else Debug.LogError("█ [InstantiateHeroAgent] prefab != null");
        HeroAgents[type] = prefab;
    }
  
    public void PlaceToNavMesh(GameObject gameObject) {
        var trans = gameObject.transform;
        gameObject.transform.SetPositionAndRotation(Vector3.zero, trans.rotation);
    }
}