Automatically assigning platform `iOS` with version `9.0` on target `Runner` because no platform was specified

Question

I get this error when trying to run on iPhone 12 pro max - 14.5 simulator.

Launching lib/main.dart on iPhone 12 Pro Max in debug mode... Running pod install... 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 `assets_audio_player` from `.symlinks/plugins/assets_audio_player/ios`
-> Fetching podspec for `assets_audio_player_web` from `.symlinks/plugins/assets_audio_player_web/ios`
-> Fetching podspec for `firebase_auth` from `.symlinks/plugins/firebase_auth/ios`
firebase_auth: Using Firebase SDK version '8.3.0' defined in 'firebase_core'
-> Fetching podspec for `firebase_core` from `.symlinks/plugins/firebase_core/ios`
firebase_core: Using Firebase SDK version '8.3.0' defined in 'firebase_core'
-> Fetching podspec for `flutter_downloader` from `.symlinks/plugins/flutter_downloader/ios`
-> Fetching podspec for `path_provider` from `.symlinks/plugins/path_provider/ios`
-> Fetching podspec for `permission_handler` from `.symlinks/plugins/permission_handler/ios`
-> Fetching podspec for `shared_preferences` from `.symlinks/plugins/shared_preferences/ios`
-> Fetching podspec for `sqflite` from `.symlinks/plugins/sqflite/ios`
-> Fetching podspec for `video_player` from `.symlinks/plugins/video_player/ios`
-> Fetching podspec for `wakelock` from `.symlinks/plugins/wakelock/ios`
-> Fetching podspec for `wc_flutter_share` from `.symlinks/plugins/wc_flutter_share/ios`
-> Fetching podspec for `webview_flutter` from `.symlinks/plugins/webview_flutter/ios`

Resolving dependencies of `Podfile`
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only perfomed in repo update
[!] CocoaPods could not find compatible versions for pod "firebase_auth":
  In Podfile:
    firebase_auth (from `.symlinks/plugins/firebase_auth/ios`)

Specs satisfying the `firebase_auth (from `.symlinks/plugins/firebase_auth/ios`)` dependency were found, but they required a higher minimum deployment target.

/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:328:in `raise_error_unless_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:310:in `block in unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `tap'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:684:in `attempt_to_activate'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:254:in `process_topmost_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:182:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolver.rb:43:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/resolver.rb:94:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer/analyzer.rb:1074:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer/analyzer.rb:1072:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:414:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:239:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:238:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/installer.rb:160:in `install!'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/command/install.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/lib/cocoapods/command.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.2/bin/pod:55:in `<top (required)>'
/usr/local/bin/pod:23:in `load'
/usr/local/bin/pod:23:in `<main>'

Error output from CocoaPods: ↳

[!] Automatically assigning platform `iOS` with version `9.0` 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`.

I'm getting error when my firebase_auth added

Solution

Edit your pod file

Change the development target to 11.0 from Xcode

Delete PodFile.lock

Delete Pods Folder

Flutter Clean

Flutter pub get

Run on iOS device