ios – Fetch information in background thread utilizing Coredata

I am dealing with a difficulty with accessing the end result from a carry out block in Core Information when fetching nations from the database in a background context. Here is the code snippet:

actor Repository {
    @out there(iOS 15.0, *)
    non-public func fetchAllCountries() async -> [MCCountry]? {
        let request = getFetchRequest()
        let backgroundContext = container.newBackgroundContext()
        do {
            let end result = attempt await backgroundContext.carry out {
                let nations = attempt backgroundContext.fetch(request) as? [MCCountry]
                let attributeValue = nations?.first?.countryCode
                debugPrint("Nation code (String(describing: attributeValue))") // returns worth
                return nations
            }
            debugPrint("Nation (String(describing: end result))") // crashes right here
            return end result
        } catch {
            debugPrint("error (error)")
            return nil
        }
    }
}

Caller:

Process {
             await repository.fetchCountries { lead to
                if let end result {
                    for worth in end result {
                        debugPrint("Worth is (String(describing: worth.countryCode))") //returns nil
                    }
                }
            }
        }

The issue is that though I can entry the end result contained in the carry out block, the returned end result from backgroundContext.carry out appears to be inaccessible. When I attempt to entry the end result after the block, I encounter an EXC_BAD_ACCESS error. I anticipated to obtain the end result from the carry out technique and return it instantly within the fetchAllCountries technique.

Am I lacking one thing in my understanding? Should not I anticipate a end result from the carry out block? Can somebody please assist me establish what’s fallacious with the code?

Thanks upfront.