I’m trying to add more data to my users collection in Firebase Firestore but for whatever reason the payment method I have setup with passkit throws an exception when ran in the simulator.

Can anyone help with my issue?

Cart Manager:

import Foundation
import PassKit

class CartManager: ObservableObject {
    @Published private(set) var products: [Products] = []
    @Published private(set) var total: Int = 0
    
    let paymentHandler = PaymentHandler()
    @Published var paymentSuccess = false
    
    func addToCart(product: Products) {
        products.append(product)
        total += product.price
    }
    
    func removeFromCart(product: Products) {
        products = products.filter {$0.id != product.id}
        total -= product.price
    }
    
    func pay() {
        paymentHandler.startPayment(products: products, total: total) { success in
            self.paymentSuccess = success
            self.products = []
            self.total = 0
        }
    }
    
    
}

Payment Handler

import Foundation
import PassKit
import Firebase

typealias PaymentCompletionHandler = (Bool) -> Void

class PaymentHandler: NSObject {
    var paymentController: PKPaymentAuthorizationController?
    var paymentSummaryItems = [PKPaymentSummaryItem]()
    var paymentStatus = PKPaymentAuthorizationStatus.failure
    var completionHandler: PaymentCompletionHandler?
    @Published public var orderNumber = UUID()
    
    static let supportedNetworks: [PKPaymentNetwork] = [.visa, .masterCard]
    
    func startPayment(products: [Products], total: Int, completion: @escaping PaymentCompletionHandler) {
        completionHandler = completion
        
        paymentSummaryItems = []
        
        products.forEach {
            product in
            let item =  PKPaymentSummaryItem(label: product.name, amount: NSDecimalNumber(string: "(product.price).00"), type: .final)
            paymentSummaryItems.append(item)
        }
        
        let total = PKPaymentSummaryItem(label: "Total", amount: NSDecimalNumber(string: "(total).00"), type: .final)
        paymentSummaryItems.append(total)
        
        let paymentRequest = PKPaymentRequest()
        paymentRequest.paymentSummaryItems = paymentSummaryItems
        paymentRequest.merchantIdentifier = "merchant.mikey.newbold.ToftwoodSocialClubApp"
        paymentRequest.merchantCapabilities = .threeDSecure
        paymentRequest.countryCode = "GB"
        paymentRequest.currencyCode = "GBP"
        paymentRequest.supportedNetworks = PaymentHandler.supportedNetworks
        paymentRequest.requiredShippingContactFields = [.name]
        
        paymentController = PKPaymentAuthorizationController(paymentRequest: paymentRequest)
        paymentController?.delegate = self
        paymentController?.present(completion: { (presented: Bool) in
            if presented {
                debugPrint("Presented payment controller")
                
            } else {
                debugPrint("Failed to present controller")
            }
        })
    }
}
        
extension PaymentHandler: PKPaymentAuthorizationControllerDelegate {
    func paymentAuthorizationController(_ controller: PKPaymentAuthorizationController, didAuthorizePayment payment: PKPayment, handler completion: @escaping (PKPaymentAuthorizationResult) -> Void) {
        let errors = [Error]()
        let status = PKPaymentAuthorizationStatus.success
        
        self.paymentStatus = status
        completion(PKPaymentAuthorizationResult(status: status, errors: errors))
    }
    
    
    
    func paymentAuthorizationControllerDidFinish(_ controller: PKPaymentAuthorizationController) {
        controller.dismiss {
            DispatchQueue.main.async {
                if self.paymentStatus == .success {
                    if let completionHandler = self.completionHandler{
                        completionHandler(true)
                        
                    }
                }
                
                else {
                    if let completionHandler = self.completionHandler {
                        completionHandler(false)
                    }
                }
            }
        }
    }
}

I’ve attempted to print out a uuid which works fine but when I come to actually bind a piece of data to firebase, it won’t allow it