处理 Podfile 的安装后挂钩时发生错误。无法在 iOS 模拟器上运行 flutter 项目并出现 pod 错误

Question

我已经为我的 flutter 项目设置了一个 firebase 项目，但在运行该项目时出现以下错误。我尝试正确安装 Pod，但执行时仍然出现错误。如果您有任何想法，请告诉我。我已经分享了控制台日志

- Generating dummy source at `Pods/Target Support Files/Pods-Runner/Pods-Runner-dummy.m`
      - Generating deterministic UUIDs
      - Stabilizing target UUIDs
      - Running post install hooks
    [!] An error occurred while processing the post-install hook of the Podfile.

    undefined method `each_child' for #<Dir:0x00007fd6d1da4a58>

    Documents/Flutter/packages/flutter_tools/bin/podhelper.rb:57:in `block in flutter_additional_ios_build_settings'
    Documents/Flutter/packages/flutter_tools/bin/podhelper.rb:54:in `each'
    Documents/Flutter/packages/flutter_tools/bin/podhelper.rb:54:in `flutter_additional_ios_build_settings'
    flutter-project/ios/Podfile:41:in `block (3 levels) in from_ruby'
    flutter-projecty/ios/Podfile:40:in `each'
    flutter-project/ios/Podfile:40:in `block (2 levels) in from_ruby'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-core-1.10.2/lib/cocoapods-core/podfile.rb:179:in
    `post_install!'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:897:in
    `run_podfile_post_install_hook'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:885:in `block in
    run_podfile_post_install_hooks'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/user_interface.rb:145:in `message'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:884:in
    `run_podfile_post_install_hooks'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:329:in `block (2 levels) in
    create_and_save_projects'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer/xcode/pods_project_generator/pod
    s_project_writer.rb:61:in `write!'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:328:in `block in
    create_and_save_projects'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/user_interface.rb:64:in `section'
    /Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:307:in
    `create_and_save_projects'
/Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:178:in `integrate'
/Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:166:in `install!'
/Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/command/install.rb:52:in `run'
/Users/.rvm/gems/ruby-2.5.5/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
/Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/lib/cocoapods/command.rb:52:in `run'
/Users/.rvm/rubies/ruby-2.5.5/lib/ruby/gems/2.5.0/gems/cocoapods-1.10.2/bin/pod:55:in `<top (required)>'
/Users/.rvm/gems/ruby-2.5.5/bin/pod:23:in `load'
/Users/.rvm/gems/ruby-2.5.5/bin/pod:23:in `<main>'

Error running pod install
Error launching application on iPhone 8.

Answer 1

导航到 ios 目录然后运行这些命令

cd ios (navigate to ios directory)
flutter precache --ios
pod install 

Answer 2

我已经解决了这个问题，即 podfile 的问题，因此我运行了以下命令并且它有效。

sudo gem 安装 cocoapods

有关更多信息，我已在 GitHub 上提出了此问题，您可以在这里找到