Hello, Can you please explain what the following syntax is for: presentedSubscription = tipView.publisher(for: .isPresented).sink { isPresented in if isPresented == false {     self.tableView.tableHeaderView = nil     } } Thanks in advance.

I am also facing a similar issue, i am able to run in the simulator for the first time. But, in the second time it fails with session state 2, i,e. "Session not Activated". Please help. Thanks in advance