Bug Cloud Save and Serializable objects throwing errors

Hello,

I'm currently trying to save a list of player-selected cosmetic items to Cloud Save service.

The list is of type "List<AssetReference>". I have had no problems serializing and saving these objects locally to a file using JsonUtility.

I am now experimenting with moving certain save data into the cloud.

However, when I try to send the same data to Cloud Save, I'm getting this error:

My code:

Code (CSharp):

1. List<AssetReference> items; // passed in parameter
2. Dictionary<string, object> dataDictionary = new()
3. {
4.     { "EquippedItems", items }
5. };
6.  
7. await CloudSaveService.Instance.Data.ForceSaveAsync(dataDictionary);

I'm assuming that the Dictionary value "object" is valid for any serializable type, correct?

What is happening here? I can serialize these objects with no issue locally, so why would there be an issue with Cloud Save? Are there some serialization limitations specific to Cloud Save I'm not aware of?

 

Looks like saving out just the AssetGUIDs string from the AssetReferences, and then loading them at runtime using "new AssetReference(guid)" and loading assets via Addressables.LoadAssetAsync / InstantiateAsync using that AssetReference as the key can work just fine, and the string array is way friendlier for json and CloudSave.

 

Anyone else seeing this error and not knowing what's up, for us once we dug in, we found a "can only call this from the main thread" inner exception. We were trying to call it outside of the proper scope. So moved it in to a coroutine and all was well.