android studio - Flutter doctor shows everything OK but code doesn't compile (Basically, the IDE doesn't recognize Flutter sdk)

Question

I just created a new project and for some reason it has compile errors thus cannot run the app. When I run flutter doctor:

Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel dev, 1.26.0-1.0.pre, on macOS 11.1 20C69 darwin-x64, locale en-DE)
[?] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
[?] Xcode - develop for iOS and macOS (Xcode 12.3)
[?] Android Studio (version 4.1)
[?] Android Studio
[?] VS Code (version 1.52.1)
[?] Connected device (1 available)

But the code looks like this:

When trying from Android Studio:

Issue I found out: Disabling the Dart sdk makes the code compile but of course I cannot run anything on this state:

Running which flutter dart :

~/Documents/flutter_sdk/flutter/bin/flutter
~/Documents/flutter_sdk/flutter/bin/dart

I did check the issue here, but no luck.

Answer 1

等待大神答复