Navigator operation requested with a context that does not include a Navigator.

 Before:

 

void main() {
  runApp(AnaEkran(),

  );
}

After:

void main() {
  runApp(MaterialApp(
    home: AnaEkran(),
  ),
  );
}

https://stackoverflow.com/questions/44004451/navigator-operation-requested-with-a-context-that-does-not-include-a-navigator