IllegalArgumentException: navigation destination xxx is unknown to this NavController

Question

I am having issue with the new Android Navigation Architecture component when I try to navigate from one Fragment to another, I get this weird error:

Answer 1

There could be many reasons for this problem. In my case i was using the MVVM model and i was observing a boolean for navigation when the boolean is true -> navigate else don't do anything and this was working fine but there was one mistake here

when pressing back button from the destination fragment i was encountering the same problem .And problem was the boolean object as I forgot to change the boolean value to false this created the mess.I just created a function in viewModel to change its value to false and called it just after the findNavController()