Tried different solution, but nothing works for me.

Sharing links refereed.

Flutter Error running pod install After Upgrading Flutter version

Pod Result

Running "flutter pub get" in firstapp...                         2,706ms

Launching lib/main.dart on iPhone 12 Pro Max in debug mode... Running pod install... 5.3s CocoaPods' output: ↳ Preparing

Analyzing dependencies

Inspecting targets to integrate
  Using `ARCHS` setting to build architectures of target `Pods-Runner`: (``)

Fetching external sources
-> Fetching podspec for `Flutter` from `Flutter`
-> Fetching podspec for `fluttertoast` from `.symlinks/plugins/fluttertoast/ios`
-> Fetching podspec for `razorpay_flutter` from `.symlinks/plugins/razorpay_flutter/ios`

Resolving dependencies of `Podfile`
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only performed in repo update
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only performed in repo update

Error output from CocoaPods: ↳

[!] Automatically assigning platform `iOS` with version `12.0` on target `Runner` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.
/usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:15:in `initialize': undefined method `with_indifferent_access' for #<String:0x00007fcbdf105240> (NoMethodError)
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in `new'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in `from_file'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:441:in `refresh_metadata'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:56:in `refresh_metadata'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:31:in `initialize'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:30:in `initialize'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in `new'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in `block in source_from_path'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:322:in `source_from_path'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `block in aggregate_with_repos'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `map'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `aggregate_with_repos'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:26:in `aggregate'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:60:in `all'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:173:in `repo_information'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:77:in `stack'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:24:in `report'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:66:in `report_error'
    from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:396:in `handle_exception'
    from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:337:in `rescue in run'
    from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:324:in `run'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:52:in `run'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/bin/pod:55:in `<top (required)>'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in `load'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in `<main>'
/usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:15:in `initialize': undefined method `with_indifferent_access' for #<String:0x00007fcbda2b6c60> (NoMethodError)
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in `new'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in `from_file'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:441:in `refresh_metadata'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:56:in `refresh_metadata'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:31:in `initialize'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:30:in `initialize'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in `new'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in `block in source_from_path'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:322:in `source_from_path'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `block in aggregate_with_repos'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `map'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in `aggregate_with_repos'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:26:in `aggregate'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:60:in `all'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:393:in `source_with_url'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/sources_manager.rb:22:in `find_or_create_source_with_url'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:178:in `block in sources'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:177:in `map'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:177:in `sources'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:1077:in `block in resolve_dependencies'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface.rb:64:in `section'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:1076:in `resolve_dependencies'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:416:in `analyze'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:241:in `block in resolve_dependencies'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface.rb:64:in `section'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:240:in `resolve_dependencies'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:161:in `install!'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command/install.rb:52:in `run'
    from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:52:in `run'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/bin/pod:55:in `<top (required)>'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in `load'
    from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in `<main>'

Error running pod install Error launching application on iPhone 12 Pro Max.

After updating the MAC OS response this

Launching lib/main.dart on iPhone 12 Pro Max in debug mode...

Running pod install... 1,300ms CocoaPods' output: ↳ Preparing

Analyzing dependencies

Inspecting targets to integrate
  Using `ARCHS` setting to build architectures of target `Pods-Runner`: (``)

Fetching external sources
-> Fetching podspec for `Flutter` from `Flutter`
-> Fetching podspec for `fluttertoast` from `.symlinks/plugins/fluttertoast/ios`
-> Fetching podspec for `razorpay_flutter` from `.symlinks/plugins/razorpay_flutter/ios`

Resolving dependencies of `Podfile`
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only performed in repo update
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only performed in repo update

Error output from CocoaPods: ↳ /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:15:in initialize': undefined method with_indifferent_access' for #String:0x00007fd8f39e86e8 (NoMethodError) from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in new' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in from_file' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:441:in refresh_metadata' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:56:in refresh_metadata' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:31:in initialize' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:30:in initialize' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in new' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in block in source_from_path' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:322:in source_from_path' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in block in aggregate_with_repos' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in map' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in aggregate_with_repos' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:26:in aggregate' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:60:in all' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:173:in repo_information' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:77:in stack' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface/error_report.rb:24:in report' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:66:in report_error' from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:396:in handle_exception' from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:337:in rescue in run' from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:324:in run' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:52:in run' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/bin/pod:55:in <top (required)>' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in load' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in <main>' /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:15:in initialize': undefined method with_indifferent_access' for #<String:0x00007fd8f6a9e8a0> (NoMethodError) from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in new' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/metadata.rb:28:in from_file' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:441:in refresh_metadata' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:56:in refresh_metadata' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source.rb:31:in initialize' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/cdn_source.rb:30:in initialize' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in new' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:315:in block in source_from_path' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:322:in source_from_path' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in block in aggregate_with_repos' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in map' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:331:in aggregate_with_repos' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:26:in aggregate' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:60:in all' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-core-1.11.2/lib/cocoapods-core/source/manager.rb:393:in source_with_url' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/sources_manager.rb:22:in find_or_create_source_with_url' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:178:in block in sources' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:177:in map' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:177:in sources' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:1077:in block in resolve_dependencies' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface.rb:64:in section' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:1076:in resolve_dependencies' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer/analyzer.rb:124:in analyze' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:416:in analyze' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:241:in block in resolve_dependencies' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/user_interface.rb:64:in section' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:240:in resolve_dependencies' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/installer.rb:161:in install!' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command/install.rb:52:in run' from /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in run' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/lib/cocoapods/command.rb:52:in run' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/gems/cocoapods-1.11.2/bin/pod:55:in <top (required)>' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in load' from /usr/local/Cellar/cocoapods/1.11.2_1/libexec/bin/pod:23:in `'

Error running pod install Error launching application on iPhone 12 Pro Max.

CodePudding user response：

Try this on android studio or any-other IDE which you use

1. Delete the Podfile, Podfile.lock, Pods folder, Runner.xcworkspace, Flutter.framwork(in iOS/Flutter folder)
2. flutter clean
3. flutter build iOS

CodePudding user response：

Resolved this issue updating ruby version and install cocoapods

RVM

https://rvm.io/rubies/installing

Cocoapods

cocoapods not installing

Remove cache

rm -vrf ~/.cocoapods*