'pod init' and 'pod install' both fail with "can't modify frozen String (FrozenError)"

[patrickmay]

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What did you do?

I ran 'pod init' on an Intel MacBook Pro running macOS 12.5.1 and the latest Xcode.

What did you expect to happen?

I expected a Podfile to be created.

What happened instead?

I got this error:

/usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/user_interface/error_report.rb:34:in `force_encoding': can't modify frozen String (FrozenError)
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/user_interface/error_report.rb:34:in `report'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:66:in `report_error'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/claide-1.1.0/lib/claide/command.rb:396:in `handle_exception'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/claide-1.1.0/lib/claide/command.rb:337:in `rescue in run'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/claide-1.1.0/lib/claide/command.rb:324:in `run'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:52:in `run'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/bin/pod:55:in `<top (required)>'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/bin/pod:23:in `load'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/bin/pod:23:in `<main>'
/Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.21.0/lib/xcodeproj/project.rb:228:in `initialize_from_file': [Xcodeproj] Unknown object version (56). (RuntimeError)
	from /Library/Ruby/Gems/2.6.0/gems/xcodeproj-1.21.0/lib/xcodeproj/project.rb:113:in `open'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/command/init.rb:41:in `validate!'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/claide-1.1.0/lib/claide/command.rb:333:in `run'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:52:in `run'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/gems/cocoapods-1.11.3/bin/pod:55:in `<top (required)>'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/bin/pod:23:in `load'
	from /usr/local/Cellar/cocoapods/1.11.3/libexec/bin/pod:23:in `<main>'

I've tried uninstalling and reinstalling Cocoapods, but as a gem and from homebrew. Neither work.

CocoaPods Environment

### Stack

CocoaPods : 1.11.3
Ruby : ruby 2.6.8p205 (2021-07-07 revision 67951) [universal.x86_64-darwin21]
RubyGems : 3.0.3.1
Host : macOS 12.5.1 (21G83)
Xcode : 14.0.1 (14A400)
Git : git version 2.37.0 (Apple Git-136)
Ruby lib dir : /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib
Repositories : trunk - CDN - https://cdn.cocoapods.org/

### Installation Source

Executable Path: /usr/local/Cellar/cocoapods/1.11.3/libexec/bin/pod

### 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

[patrickmay]

I found another ticket that suggested sudo gem update xcodeproj. That seems to have fixed the problem.

[Panway]

gem update xcodeproj works for me(I use rbenv to manage ruby).

my error is

...
/Users/xxx/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/xcodeproj-1.21.0/lib/xcodeproj/project.rb:228:in `initialize_from_file': [Xcodeproj] Unknown object version (56). (RuntimeError)
...
/Users/xxx/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/cocoapods-1.11.3/lib/cocoapods/user_interface/error_report.rb:34:in `force_encoding': can't modify frozen String: "[Xcodeproj] Unknown object version (56)." (FrozenError)
...

[jackcoral89]

Also works for me sudo gem update.

Thanks @patrickmay

[LarryLib]

xcodeproj

sudo gem update xcodeproj