Teams PrimaryChannel FilesFolder returns "404 page not found"

[Martin Coupal]

Is it normal this call returns an error?

https://graph.microsoft.com/v1.0/teams/{group-id}/primaryChannel/filesFolder

        "code": "UnknownError",

        "message": "404 page not found"

However, this call will be successfull :

https://graph.microsoft.com/v1.0/teams/{group-id}/channels/{primaryChannel-id}/filesFolder

Thanks.