目录

前言

一、错误重现

二、解决方案

1.右击项目修改文件展示方式

2.修改.xcodeproj文件

3.参考文档

---

前言

    我们使用Xcode创建新项目之后，执行pod init报错。我们看一下如何解决。

一、错误重现

RuntimeError - `PBXGroup` attempted to initialize an object with unknown ISA `PBXFileSystemSynchronizedRootGroup` from attributes: `{"isa"=>"PBXFileSystemSynchronizedRootGroup", "exceptions"=>["2AB3B2832C995E4700273321"], "explicitFileTypes"=>{}, "explicitFolders"=>[], "path"=>"DemoSample", "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-1.23.0/lib/xcodeproj/project/object.rb:359:in `rescue in object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:349:in `object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:300:in `block (2 levels) in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:299:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:299:in `block in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:296:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:296:in `configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:350:in `object_with_uuid'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:290:in `block in configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:287:in `each'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project/object.rb:287:in `configure_with_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/lib/xcodeproj/project.rb:213:in `initialize_from_file'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.23.0/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>'

二、解决方案

1.右击项目修改文件展示方式

图1.修改项目显示方式

2.修改.xcodeproj文件

        使用文本编辑器修改.xcodeproj文件（VSCode或者subText等）。

        移除下面的文件

minimizedProjectReferenceProxies = 1;
preferredProjectObjectVersion = 77; 

        然后更新项目的版本，把

objectVersion = 77

        改成

to objectVersion = 56;

        重新运行项目执行pod相关命令。

3.参考文档

        https://github.com/CocoaPods/CocoaPods/issues/12583