flutter error: This widget has been unmounted, so the State no longer has a context (and should be considered defunct)

Try to use

Navigator.pop() or Navigator.of(context, rootNavigator: true).pop()

instead of Navigator.of(mounted).pop()) to close Dialog window.

This widget has been unmounted, so the State no longer has a context (and should be considered defunct). Consider canceling any. Ans:

if (mounted) {
  ...
}

this is because you don't dispose of or cancel any subscriptions or controllers.TRr to dispose or cancel subscriptions or controllers.

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