ios - CocoaPods could not find compatible versions for pod "FirebaseCore": - Stack Overflow

I am trying to update my ios app which has been released since 2022. During "pod install", following error occurs.

Ignoring strscan-3.1.0 because its extensions are not built. Try: gem pristine strscan --version 3.1.0
Analyzing dependencies
cloud_firestore: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_analytics: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_app_installations: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_auth: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_in_app_messaging: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
firebase_messaging: Using Firebase SDK version '11.4.0' defined in 'firebase_core'
[!] CocoaPods could not find compatible versions for pod "FirebaseCore":
  In Podfile:
    cloud_firestore (from `.symlinks/plugins/cloud_firestore/ios`) was resolved to 5.6.0, which depends on
      Firebase/Firestore (= 11.4.0) was resolved to 11.4.0, which depends on
        FirebaseFirestore (~> 11.4.0) was resolved to 11.4.0, which depends on
          FirebaseCore (~> 11.4)

    cloud_firestore (from `.symlinks/plugins/cloud_firestore/ios`) was resolved to 5.6.0, which depends on
      Firebase/Firestore (= 11.4.0) was resolved to 11.4.0, which depends on
        FirebaseFirestore (~> 11.4.0) was resolved to 11.4.0, which depends on
          FirebaseFirestoreInternal (= 11.4.0) was resolved to 11.4.0, which depends on
            FirebaseCore (~> 11.0)

    firebase_core (from `.symlinks/plugins/firebase_core/ios`) was resolved to 3.9.0, which depends on
      Firebase/CoreOnly (= 11.4.0) was resolved to 11.4.0, which depends on
        FirebaseCore (= 11.4.0)

CocoaPods could not find compatible versions for pod "FirebaseInstallations":
  In Podfile:
    firebase_app_installations (from `.symlinks/plugins/firebase_app_installations/ios`) was resolved to 0.3.1-7, which depends on
      Firebase/Installations (= 11.4.0) was resolved to 11.4.0, which depends on
        FirebaseInstallations (~> 11.4.0)

    firebase_in_app_messaging (from `.symlinks/plugins/firebase_in_app_messaging/ios`) was resolved to 0.8.0-11, which depends on
      Firebase/InAppMessaging (= 11.4.0) was resolved to 11.4.0, which depends on
        FirebaseInAppMessaging (~> 11.4.0-beta) was resolved to 11.4.0-beta, which depends on
          FirebaseInstallations (~> 11.0)

CocoaPods could not find compatible versions for pod "GoogleAppMeasurement":
  In Podfile:
    firebase_analytics (from `.symlinks/plugins/firebase_analytics/ios`) was resolved to 11.3.6, which depends on
      Firebase/Analytics (= 11.4.0) was resolved to 11.4.0, which depends on
        Firebase/Core (= 11.4.0) was resolved to 11.4.0, which depends on
          FirebaseAnalytics (~> 11.4.0) was resolved to 11.4.0, which depends on
            FirebaseAnalytics/AdIdSupport (= 11.4.0) was resolved to 11.4.0, which depends on
              GoogleAppMeasurement (= 11.4.0)

    google_mobile_ads (from `.symlinks/plugins/google_mobile_ads/ios`) was resolved to 1.0.0, which depends on
      Google-Mobile-Ads-SDK (~> 9.13) was resolved to 9.14.0, which depends on
        GoogleAppMeasurement (< 11.0, >= 7.0)

podfile:

# Uncomment this line to define a global platform for your project
platform :ios, '13.0'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
 'Debug' => :debug,
 'Profile' => :release,
 'Release' => :release,
}

def flutter_root
 generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
 unless File.exist?(generated_xcode_build_settings_path)
   raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
 end

 File.foreach(generated_xcode_build_settings_path) do |line|
   matches = line.match(/FLUTTER_ROOT\=(.*)/)
   return matches[1].strip if matches
 end
 raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
 use_frameworks!
 use_modular_headers!

 flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end



post_install do |installer|
 installer.generated_projects.each do |project|
       project.targets.each do |target|
           target.build_configurations.each do |config|
               config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.0'
            end
       end
end
   installer.pods_project.targets.each do |target|
   flutter_additional_ios_build_settings(target)
 end
end

What I have done is:

• flutter clean
• flutter pub upgrade
• pod repo update
• pod install
• in pubspec.yaml, delete firebase_core, cloud_firebase, firebase_auth, and re-add them by flutter pub add ⚪︎⚪︎⚪︎.

also, podfile.lock file was removed.

flutter doctor:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.27.1, on macOS 15.0.1 24A348 darwin-arm64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.2)
[✓] VS Code (version 1.92.2)
[✓] Connected device (5 available)
[✓] Network resources

Does anybody know what else should I do?