Building macOS application...
2020-12-18 21:42:34.357 _flutter[95053:9823256] Failed to find path for "flutter_assets"
2020-12-18 21:42:34.358 d_flutter[95053:9823256] Failed to find path for "flutter_assets"
embedder.cc (764): 'FlutterEngineInitialize' returned 'kInvalidArguments'. The assets path in the Flutter project arguments was missing.
2020-12-18 21:42:34.359 da_flutter[95053:9823256] Failed to initialize Flutter engine: error 2
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.
embedder.cc (1331): 'FlutterEngineSendPointerEvent' returned 'kInvalidArguments'. Engine handle was invalid.

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, 1.26.0-2.0.pre.84, on Mac OS X 10.15.7 19H2 darwin-x64, locale en-CN)
[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, please use
      `flutter config --android-sdk` to update to that location.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
[✗] Chrome - develop for the web (Cannot find Chrome executable at /Applications/Google
    Chrome.app/Contents/MacOS/Google Chrome)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[!] Android Studio (not installed)
[✓] Connected device (1 available)