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Hi.I'm trying to show user notification with Image in attachment on MacOS Catalina via new API (UNUserNotification) but they shows notification without image.This is my code:import Foundation import Cocoa import UserNotifications class ViewController: NSViewController { private var center: UNUserNotificationCenter? private let handler = NotificationHandler() private let notifyCategoryIdentifier = "test" @IBAction func showNotify(_ sender: Any) { scheduleNotification() } override func viewDidLoad() { super.viewDidLoad() self.center = UNUserNotificationCenter.current() self.center?.delegate = self.handler self.initNotifications() } override var representedObject: Any? { didSet { // Update the view, if already loaded. } } func scheduleNotification() { let center = UNUserNotificationCenter.current() let content = UNMutableNotificationContent() content.title = "Test notification" content.body = "Message of test notification" content.categoryIdentifier = self.notifyCategoryIdentifier content.userInfo = ["customData": "test"] content.sound = UNNotificationSound.default //Create image with solid color let url = createImage(NSColor(red: 1, green: 0, blue: 0, alpha: 0.5), NSSize(width: 50, height: 50)) //Add this image to attachment of notification for show in alert if let attachment = try? UNNotificationAttachment(identifier: "image", url: url, options: nil) { content.attachments = [attachment] } let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false) let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger) center.add(request) let alert = NSAlert() alert.informativeText = "Notification created, after 5 seconds it will be shown. Please wait..." alert.messageText = "Successful" alert.runModal() } func createImage(_ color: NSColor, _ size: NSSize) -> URL { let image = NSImage(size: size) image.lockFocus() color.drawSwatch(in: NSMakeRect(0, 0, size.width, size.height)) image.unlockFocus() let url = FileManager.default.temporaryDirectory.appendingPathComponent("test.png", isDirectory: false) let _ = image.writeToFile(file: url, usingType: .png) return url; } private func initNotifications() { guard let center = self.center else { return } center.requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in if granted { print("Successful authorized!") // Define the custom actions. let byeAction = UNNotificationAction(identifier: NotificationActionsEnum.bye.rawValue, title: NSLocalizedString("Bye", comment: ""), options: UNNotificationActionOptions(rawValue: 0)) let sayHelloAction = UNNotificationAction(identifier: NotificationActionsEnum.sayHello.rawValue, title: NSLocalizedString("Hello", comment: ""), options: UNNotificationActionOptions(rawValue: 0)) // Define the notification type let testCategory = UNNotificationCategory(identifier: self.notifyCategoryIdentifier, actions: [byeAction, sayHelloAction], intentIdentifiers: [], hiddenPreviewsBodyPlaceholder: "", options: .customDismissAction) center.setNotificationCategories([testCategory]) } else { print("Authorization denied!") return } } } }User notification example: https://i.stack.imgur.com/LwdOv.png Text exists, but no image.I tried to show notification with any local graphical files in attachment but i had the same result. If I set url to web service, I have an error Error Domain=UNErrorDomain Code=100 "Invalid attachment file URL", with local URL to image file I have no errors.Full sample code You may see on GithubWhen I rewrite this code to show notifications in iOS it's perfectly working! But in MacOS I have unsuccessful result.Please someone help me, how to show image in MacOS notifications?