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 …我有分支 A、B、C、D，它们在我的master中合并，我想创建包含 A、C、D 的发布分支，并且我想排除 B 分支更改，以便我的发布分支仅包含 A、C、 B 分行。请你帮我解决这个问题。谢谢你。