Hi Anna_Ciobu, Double check your Preview struct method. You can always use the default if the ContentView is too complicated. Make sure the method is outside of your code scope; at the very bottom of your code and reads (generally): struct ContentView: some View { var body: some View { // body of your code that does something and is defined in the body{}... } } #Preview { ContentView() } Also make sure that your device simulator is set (din't press the build/play button : Happy frustration free coding :) --CC