Implementing showcaseview in Flutter raises this error and I can't figure out where it's coming from. The code shown below is part of my project:
BuildContext myContext;
initState(){
WidgetsBinding.instance.addPostFrameCallback((_) {
Future.delayed(const Duration(milliseconds: 400), () {
ShowCaseWidget.of(myContext).startShowCase([_timeline_filter]);
});
});
super.initState();
}