Error: 'Uint8List' is restricted and can't be extended or implemented.

[GSri30]

I'm getting the following error while trying this :

../../../.pub-cache/hosted/pub.dartlang.org/pinenacl-0.2.1/lib/api/api.dart:24:7: Error: 'Uint8List' is restricted and can't be extended or implemented.
class ByteList with ListMixin<int>, Encodable implements Uint8List {
      ^

flutter doctor :

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, 2.5.0-5.2.pre, on Ubuntu 20.04.3 LTS 5.4.0-81-generic,
    locale en_GB.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.60.0)
[✓] Connected device (2 available)

• No issues found!

Possible suspect : breaking change in pinenacl-dart due to breaking change in dart-sdk

[kaderate]

Thank you @GSri30. We will merge your PR today and release a new version of the library.