IEnumerator Start()
{
string uri = @"file:///E:\Work\Work2\AssetBundleTest\\AssetBundles\wall1.unity3d";
UnityWebRequest uwr = UnityWebRequestAssetBundle.GetAssetBundle(uri);
yield return uwr.SendWebRequest();
AssetBundle ab = DownloadHandlerAssetBundle.GetContent(uwr);
GameObject obj = ab.LoadAsset<GameObject>("wall1");
Instantiate(obj);
}