flutter - The current Dart SDK version is 2.10.4. how can I change the version into a upper version .? In a beta or dev channel

Question

Because classbe depends on cupertino_icons >=1.0.1 which requires SDK version >=2.12.0-0 <3.0.0, version solving failed. Running "flutter pub get" in classbe... pub get failed (1; Because classbe depends on cupertino_icons >=1.0.1 which requires SDK version >

Answer 1

flutter channel beta
flutter upgrade