Flutter Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.2.1, on Linux, locale C.UTF-8)
[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
✗ Android license status unknown.
Run flutter doctor --android-licenses
to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/linux#android-setup for more details.
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.63.2)
[✓] Connected device (1 available)
! Doctor found issues in 1 category.