After updating Xcode and SDK to 26.4, I'm now getting an concurrency error when trying to update or end live activities with the following code that built successfully before: // Get list of active activities let allActivities = Activity<ArbeitszeitWidgetAttributes>.activities // Cancel all active activities Task { for activity in allActivities { await activity.end(nil, dismissalPolicy: .immediate) } } Sending 'activity' risks causing data races. Sending main actor-isolated 'activity' to @concurrent instance method 'update' risks causing data races between @concurrent and main actor-isolated uses I'm currently using nonisolated(unsafe) let activity = activity await activity.end(nil, dismissalPolicy: .immediate) to get it to compile again. What's the best approach here?