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Itransfer data between a safari extension app and MacOS app by using Distributed Notification Center. I use DistributedNotificationCenter.default().addObserver with a specific notification name and I post a notification from the MacOS App using the same name DistributedNotificationCenter.default().postNotificationNameI keep getting attempt to post distributed notification 'nameofnotification' thwarted by sandboxing.I saw in the apple documentation thatSandboxed apps can send notifications only if they do not contain a dictionary. If the sending application is in an App Sandbox, userInfo must be nil.My user Info is not nil, but this worked perfectly on previous versions of Mac. What am I missing ? Is this relatively new ?What’s the alternative to communicate between extension and app? Would an XPC service work ?