AssetBundle.Unload could not complete because the asset bundle still has an async load operation in progress.```
```csharp
if (assetBundleCreateRequest != null && !assetBundleCreateRequest.isDone)
{
assetBundleCreateRequest.assetBundle?.Unload(true);
}
It seems there is still an Asset load operation that is not complete, e.g. there has been a call to AssetBundle.LoadAssetAsync that has not finished yet.