UriFormatException: Invalid URI: The hostname could not be parsed.

Unity 2018.2.11f1
Addressables 0.4.6

Code (CSharp):

1. private void Awake()
2. {
3.    Addressables.LoadAsset<Sprite>("ArrowUp").Completed += OnLoaded;
4. }
5.  
6. private void OnLoaded(IAsyncOperation<Sprite> op)
7. {
8.    Debug.Log("Done");
9. }
10.  

This is giving me

UriFormatException: Invalid URI: The hostname could not be parsed.

What am I doing wrong here?

I've got the asset marked as Addressable:

 

Seems this is only a problem when I load assets in Awake. If I change this to Start, everything's fine.

Is this by design?

 

I think I saw that you shouldn't interact with the addressables system in Awake just yet.
They seem to be working on getting it working, but for now it should be used after Awake.

 

You could try adding Completed callback on `Addressables.InitializationOperation` with logic in your Awake.
Edit : This won't work, since the InitializationOperation property will call Initialize() which in turn have to use the string resolver which will be initialized for sure after Awake