问题：升级后 xcode pod init 报错
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Command
/Users/sedeam/.rbenv/versions/3.3.5/bin/pod init
Report
I tried to create the pod file in order to install frameworks but it didn't work.
Stack
CocoaPods : 1.15.2
Ruby : ruby 3.3.5 (2024-09-03 revision ef084cc8f4) [x86_64-darwin24]
RubyGems : 3.5.16
Host : macOS 15.0.1 (24A348)
Xcode : 16.0 (16A242d)
Git : git version 2.39.5 (Apple Git-154)
Ruby lib dir : /Users/sedeam/.rbenv/versions/3.3.5/lib
Repositories : trunk - CDN - https://cdn.cocoapods.org/
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"=>["848EFC072CB6F7A8004A4750"], "path"=>"test_pods", "sourceTree"=>"<group>"}`
If this ISA was generated by Xcode please file an issue: https://github.com/CocoaPods/Xcodeproj/issues/new
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:359:in `rescue in object_with_uuid'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:349:in `object_with_uuid'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:300:in `block (2 levels) in configure_with_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:299:in `each'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:299:in `block in configure_with_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:296:in `each'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:296:in `configure_with_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:350:in `object_with_uuid'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:290:in `block in configure_with_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:287:in `each'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project/object.rb:287:in `configure_with_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project.rb:272:in `new_from_plist'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project.rb:213:in `initialize_from_file'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/xcodeproj-1.25.1/lib/xcodeproj/project.rb:113:in `open'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/cocoapods-1.15.2/lib/cocoapods/command/init.rb:41:in `validate!'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/claide-1.1.0/lib/claide/command.rb:333:in `run'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/cocoapods-1.15.2/lib/cocoapods/command.rb:52:in `run'
/Users/sedeam/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/gems/cocoapods-1.15.2/bin/pod:55:in `<top (required)>'
/Users/sedeam/.rbenv/versions/3.3.5/bin/pod:25:in `load'
/Users/sedeam/.rbenv/versions/3.3.5/bin/pod:25:in `<main>'
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解决方案
Please follow the below steps to fix this issue
Step 1: Right click project Folder in Xcode and convert to group
Step 2: right click projectname.xcodeproj file and select Show Package Contents
you can see the file project.pbxproj and open with texteditor
Remove the following lines in this file
minimizedProjectReferenceProxies = 1;
preferredProjectObjectVersion = 77;
Also update the below version
objectVersion = 77; to objectVersion = 56;
Now you can pod init and install with your project
