[iOS] pod init 실패 (XCode 업데이트하고 Podfile 안깔릴때 응급치료법 Search for existing GitHub issues similar to yours)

Xcode 업데이트 후 Pod init으로 Podfile 을 설치하려하는데 다음과 같이 오류남

 

오류내용

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### Command

```
/Users/duck/.rbenv/versions/3.1.1/bin/pod init
```

### Report

* What did you do?

* What did you expect to happen?

* What happened instead?


### Stack

```
   CocoaPods : 1.11.3
        Ruby : ruby 3.1.1p18 (2022-02-18 revision 53f5fc4236) [x86_64-darwin21]
    RubyGems : 3.3.7
        Host : macOS 12.6 (21G115)
       Xcode : 14.0.1 (14A400)
         Git : git version 2.35.1
Ruby lib dir : /Users/duck/.rbenv/versions/3.1.1/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 - [Xcodeproj] Unknown object version (56).
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/xcodeproj-1.21.0/lib/xcodeproj/project.rb:228:in `initialize_from_file'
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/xcodeproj-1.21.0/lib/xcodeproj/project.rb:113:in `open'
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/cocoapods-1.11.3/lib/cocoapods/command/init.rb:41:in `validate!'
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/claide-1.1.0/lib/claide/command.rb:333:in `run'
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:52:in `run'
/Users/duck/.rbenv/versions/3.1.1/lib/ruby/gems/3.1.0/gems/cocoapods-1.11.3/bin/pod:55:in `<top (required)>'
/Users/duck/.rbenv/versions/3.1.1/bin/pod:25:in `load'
/Users/duck/.rbenv/versions/3.1.1/bin/pod:25: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=%5BXcodeproj%5D+Unknown+object+version+%2856%29.&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...
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   a week ago

 - RuntimeError - [Xcodeproj] Unknown object version.
   https://github.com/CocoaPods/CocoaPods/issues/10099 [closed] [4 comments]
   4 weeks ago

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Project Document

Porject Format을 12호환으로 바꿔줬다. (아래 버전으로 바꿔주면 됨)