我正在开发 Flutter 应用程序，但在运行时突然出现以下错误pod install。我需要提一下，我搜索了很多并尝试了太多方法，但不幸的是没有人有确切的undefined method 'each_child'错误。我也Podfile.lock像人们所说的那样删除了和 Pod 文件夹并且没有再次生成:(
错误：
[!] An error occurred while processing the post-install hook of the Podfile.
undefined method `each_child' for #<Dir:0x00007f82a354e4f8>
/Users/vahidnaghash/Developer/flutter/packages/flutter_tools/bin/podhelper.rb:50:in `block in flutter_additional_ios_build_settings'
/Users/vahidnaghash/Developer/flutter/packages/flutter_tools/bin/podhelper.rb:47:in `each'
/Users/vahidnaghash/Developer/flutter/packages/flutter_tools/bin/podhelper.rb:47:in `flutter_additional_ios_build_settings'
/Users/vahidnaghash/AndroidStudioProjects/careberry_flutter/careberry/ios/Podfile:39:in `block (3 levels) in from_ruby'
/Users/vahidnaghash/AndroidStudioProjects/careberry_flutter/careberry/ios/Podfile:38:in `each'
/Users/vahidnaghash/AndroidStudioProjects/careberry_flutter/careberry/ios/Podfile:38:in `block (2 levels) in from_ruby'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-core-1.10.0/lib/cocoapods-core/podfile.rb:179:in `post_install!'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer.rb:897:in `run_podfile_post_install_hook'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer.rb:885:in `block in run_podfile_post_install_hooks'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/user_interface.rb:145:in `message'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer.rb:884:in `run_podfile_post_install_hooks'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer.rb:329:in `block (2 levels) in create_and_save_projects'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer/xcode/pods_project_generator/pods_project_writer.rb:61:in `write!'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/installer.rb:328:in `block in create_and_save_projects'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.10.0/lib/cocoapods/user_interface.rb:64:in `section' …