Xcode 16 pod init command is not working / Xcode16 pod init 报错无法使用

使用Xcode 16 执行pod init 后报告如下错误：

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### Command

```
/usr/local/bin/pod init
```

### Report

* What did you do?

* What did you expect to happen?

* What happened instead?


### Stack

```
   CocoaPods : 1.15.2
        Ruby : ruby 2.6.10p210 (2022-04-12 revision 67958) [universal.x86_64-darwin24]
    RubyGems : 3.0.3.1
        Host : macOS 15.0.1 (24A348)
       Xcode : 16.0 (16A242d)
         Git : git version 2.39.5 (Apple Git-154)
Ruby lib dir : /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib
Repositories : aliyun-aliyun-specs - git - https://github.com/aliyun/aliyun-specs.git @ 0f95d1036be7ef8828f737c2833014d2c2a30685

               cocoapods - git - https://github.com/CocoaPods/Specs.git @ f9c6b97e2de41e33fcb8e5e59013f5eb3f6f3818

               master - git - https://github.com/CocoaPods/Specs.git @ 4ae331aefd7875584ff04cef71d0450389badd71

               RXRedditSDK - git - https://github.com/ruixueyun/RXRedditSDK.git @ 2abc726a53ee67704560dcf38df8a5530803d6cc

               trunk - CDN - https://cdn.cocoapods.org/
               tsinghua-git-cocoapods - git - https://mirrors.tuna.tsinghua.edu.cn/git/CocoaPods/Specs.git @ 126898823c87ccc45f8d77abb3b7f3816e344791

```

### Plugins

```
cocoapods-deintegrate : 1.0.5
cocoapods-plugins     : 1.0.0
cocoapods-search      : 1.0.1
cocoapods-trunk       : 1.6.0
cocoapods-try         : 1.2.0
```

### Error

```
RuntimeError - `PBXGroup` attempted to initialize an object with unknown ISA `PBXFileSystemSynchronizedRootGroup` from attributes: `{"isa"=>"PBXFileSystemSynchronizedRootGroup", "exceptions"=>["D00666F12CB910EA0019E6AE"], "path"=>"test1111", "sourceTree"=>"<group>"}`
If this ISA was generated by Xcode please file an issue: https://github.com/CocoaPods/Xcodeproj/issues/new
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:359:in `rescue in object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:349:in `object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:300:in `block (2 levels) in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:299:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:299:in `block in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:296:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:296:in `configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:350:in `object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:290:in `block in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:287:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project/object.rb:287:in `configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project.rb:213:in `initialize_from_file'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.24.0/lib/xcodeproj/project.rb:113:in `open'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.15.2/lib/cocoapods/command/init.rb:41:in `validate!'
/Library/Ruby/Gems/2.6.0/gems/claide-1.1.0/lib/claide/command.rb:333:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.15.2/lib/cocoapods/command.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.15.2/bin/pod:55:in `<top (required)>'
/usr/local/bin/pod:23:in `load'
/usr/local/bin/pod:23:in `<main>'
```

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[!] Oh no, an error occurred.

Search for existing GitHub issues similar to yours:
https://github.com/CocoaPods/CocoaPods/search?q=%60PBXGroup%60+attempted+to+initialize+an+object+with+unknown+ISA+%60PBXFileSystemSynchronizedRootGroup%60+from+attributes%3A+%60%7B%22isa%22%3D%3E%22PBXFileSystemSynchronizedRootGroup%22%2C+%22exceptions%22%3D%3E%5B%22D00666F12CB910EA0019E6AE%22%5D%2C+%22path%22%3D%3E%22test1111%22%2C+%22sourceTree%22%3D%3E%22%3Cgroup%3E%22%7D%60%0AIf+this+ISA+was+generated+by+Xcode+please+file+an+issue%3A+https%3A%2F%2Fgithub.com%2FCocoaPods%2FXcodeproj%2Fissues%2Fnew&type=Issues

If none exists, create a ticket, with the template displayed above, on:
https://github.com/CocoaPods/CocoaPods/issues/new

Be sure to first read the contributing guide for details on how to properly submit a ticket:
https://github.com/CocoaPods/CocoaPods/blob/master/CONTRIBUTING.md

Don't forget to anonymize any private data!

Looking for related issues on cocoapods/cocoapods...
Searching for inspections failed: undefined method `map' for nil:NilClass

解决方式：
步骤 1：在Xcode中转换项目文件夹为组

1. 打开你的 Xcode 项目。

2. 在左侧的项目导航器中，选择项目中所有的文件夹，右键点击项目文件夹。
   （注意：在Xcode16之前的工程中类似于Resources这类原本就使用Folder类型的文件夹无需选中，仍使用Folder类型即可）

   
   
   image.png

3. 选择“Convert to Group”（转换为组）。

步骤 2：查看项目文件内容

1. 在项目导航器中，右键点击 projectname.xcodeproj 文件。
2. 选择"Show in Finder"
3. 选择“Show Package Contents”（显示包内容）。

步骤 3：编辑 project.pbxproj 文件

1. 找到并打开 project.pbxproj 文件，使用文本编辑器（如 TextEdit 或 VS Code）。
2. 删除以下两行：

minimizedProjectReferenceProxies = 1;
preferredProjectObjectVersion = 77;

3. 更新以下行：

objectVersion = 77; 

修改为：

objectVersion = 56;

步骤 4：保存更改并重新运行 CocoaPods

1. 保存 project.pbxproj 文件的更改。
2. 返回终端，导航到你的项目目录。
3. 运行以下命令：

pod init
pod install