"LoadError -dlopen..." while pod install in Mac M1 - ios

Question

I have Mac M1 and am getting following error while using pod install to build flutter project in iOS.
I have already installed home brew, uninstall/install cocoapods using sudo arch -x86_64 gem install cocoapods, but still error occurs.
What can I do for solving this probrem..?
LoadError - dlopen(/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/lib/ffi_c.bundle, 0x0009): tried: '/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/lib/ffi_c.bundle' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/lib/ffi_c.bundle' (no such file) - /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/lib/ffi_c.bundle
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
...
The result of flutter doctor -v has no issues.
[✓] Flutter (Channel stable, 2.10.2, on macOS 12.2.1 21D62 darwin-arm, locale ja-JP)
• Flutter version 2.10.2 at /Users/sae/development/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 097d3313d8 (12 days ago), 2022-02-18 19:33:08 -0600
• Engine revision a83ed0e5e3
• Dart version 2.16.1
• DevTools version 2.9.2
[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
• Android SDK at /Users/sae/Library/Android/sdk
• Platform android-32, build-tools 32.1.0-rc1
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• CocoaPods version 1.11.2
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2021.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
[✓] Connected device (2 available)
• iPhone 13 (mobile) • C2EDE2E3-E820-42C2-B0EC-AFC07C401397 • ios • com.apple.CoreSimulator.SimRuntime.iOS-15-2 (simulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 98.0.4758.109
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!
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Answer 1

sudo arch -arm64e gem install cocoapods
sudo arch -arm64e gem install ffi

Answer 2

M1 macs are using ARM proccesors so the
sudo arch -x86_64 gem install cocoapods
isn't meant for such machines but x86 architectures.
Τry using sudo arch -arm64e gem install cocoapods

Answer 3

I have no idea why it solved the problem, but pod is updated regularly by using terminal in Mac instead of that in Android studio.
I used terminal of mac, moved the working directory to the ios folder of my project, and did 'pod update'.
It worked for me.
I read the comment of this:Cannot run the Flutter project with Firebase in MacBook M1