How to pre-download asset bundles ?

Hello guys , I'm new to Addressable system and I have a little confusing when using it.

So I have build the assets into asset bundle ( including content catalog .hash and .json ).

Now at client I'm doing something like this

Code (CSharp):

1. private IEnumerator LoadAssetBundles()
2.         {
3.             _loadABDone = false;
4.             var initOp = Addressables.InitializeAsync();
5.             initOp.Completed += AssetBundle_InitComplete;
6.  
7.             yield return new WaitUntil(() => _loadABDone);
8.         }
9.  
10.         private void AssetBundle_InitComplete(AsyncOperationHandle<IResourceLocator> obj)
11.         {
12.             var loadCatalog = Addressables.GetDownloadSizeAsync(obj.Result.Keys);
13.             loadCatalog.Completed += LoadCatalog_Completed;
14.         }

But the system return

Code (CSharp):

1. Exception encountered in operation UnityEngine.ResourceManagement.ResourceManager+CompletedOperation`1[System.Int64], result='', status='Failed': Exception of type 'UnityEngine.AddressableAssets.InvalidKeyException' was thrown.,

So when I log all the keys name its seem wilds ( there is number, hash , scene name , resources at Resources folder, etc...)

Is there a way I can get all the files I need to downloaded from my server and pre-load them correctly ?

Thanks.