Because every version of flutter_localizations from SDK depends on intl 0.17.0 and fstore depends on intl ^0.16.1, flutter_localizations from SDK is forbidden.
So, because fstore depends on flutter_localizations any from SDK, version solving failed. pub get failed (1; So, because fstore depends on flutter_localizations any from sdk, version solving failed.)
You can check this link it helped me a lot
https://medium.com/swlh/convert-your-flutter-app-to-enjoy-null-safety-69632aa62d7a
Although it was claimed that null safety is an opt-in feature, a fresh install still somehow forced me to upgrade my dependency. Anyway, I was glad that the error message was very useful and the change seemed easy. So, I replaced the line:
intl: ^0.16.1with
intl: ^0.17.0-nullsafety.2Now my % flutter pub get was clean and the app worked fine without any changes. That’s great! For any kind of migration exercise, it is always a good idea to start with a working baseline.
In my case, I used flutter 1 and the dependency version belongs to flutter 2.
Use the Not Null safety versions.
