wxys-MacBook-Pro:gallery wxy$ flutter run
Launching lib/main.dart on iPhone 11 Pro Max in debug mode...
 
Running pod install...                                              3.7s
CocoaPods' output:
↳
      Preparing

    Analyzing dependencies

    Inspecting targets to integrate
      Using `ARCHS` setting to build architectures of target `Pods-Runner`: (``)

    Finding Podfile changes
      - Flutter
      - package_info
      - path_provider
      - shared_preferences
      - url_launcher

    Fetching external sources
    -> Fetching podspec for `Flutter` from `Flutter`
    -> Fetching podspec for `package_info` from `.symlinks/plugins/package_info/ios`
    -> Fetching podspec for `path_provider` from `.symlinks/plugins/path_provider/ios`
    -> Fetching podspec for `shared_preferences` from `.symlinks/plugins/shared_preferences/ios`
    -> Fetching podspec for `url_launcher` from `.symlinks/plugins/url_launcher/ios`

    Resolving dependencies of `Podfile`

Error output from CocoaPods:
↳
    dyld: lazy symbol binding failed: Symbol not found: _ffi_prep_closure_loc
      Referenced from: /Users/wxy/.rvm/gems/ruby-2.3.3@global/gems/ffi-1.13.1/lib/ffi_c.bundle
      Expected in: /usr/lib/libffi.dylib

    dyld: Symbol not found: _ffi_prep_closure_loc
      Referenced from: /Users/wxy/.rvm/gems/ruby-2.3.3@global/gems/ffi-1.13.1/lib/ffi_c.bundle
      Expected in: /usr/lib/libffi.dylib


Error running pod install
Error launching application on iPhone 11 Pro Max.

[✓] Flutter (Channel stable, 1.20.0, on Mac OS X 10.14.6 18G95, locale zh-Hans-CN)
    • Flutter version 1.20.0 at /Users/wxy/Desktop/private/flutter
    • Framework revision 840c9205b3 (30 hours ago), 2020-08-04 20:55:12 -0700
    • Engine revision c8e3b94853
    • Dart version 2.9.0
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn

 
[!] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/wxy/Library/Android/sdk
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor --android-licenses

[✓] Xcode - develop for iOS and macOS (Xcode 11.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.1, Build version 11A1027
    • CocoaPods version 1.9.3

[!] Android Studio (version 3.6)
    • Android Studio at /Applications/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)

[✓] VS Code (version 1.38.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.7.1

[✓] Connected device (1 available)
    • iPhone 11 Pro Max (mobile) • FD3A97C0-EF6B-4AB6-8B32-12961F5B033D • ios • com.apple.CoreSimulator.SimRuntime.iOS-13-1 (simulator)

! Doctor found issues in 2 categories.