in-app purchase in Xcode 11 Beta 5

Hi
Hi everyone Has anyone used In-App Purchase in Xcode 11 beta 5? My code works in Xcode 10.3 but the same code does not work in Xcode 11 Beta 5. MacOS 10.15 Beta (19A526h).

publicfunc requestProducts(_ completionHandler: @escaping ProductsRequestCompletionHandler) {
        productsRequest?.cancel()
        productsRequestCompletionHandler = completionHandler
    
        let productsRequest = SKProductsRequest(productIdentifiers: productIdentifiers)
        productsRequest.delegate = self
    
        productsRequest.start()
    }

    public func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {

       let products = response.products
        productsRequestCompletionHandler?(true, products)
        productsRequest = nil
        productsRequestCompletionHandler = nil

   
    }

Thanks