Flutter app not running on ios(Error output from CocoaPods)

My flutter app is not running on a ios simulator this is what it says:

   [!] 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`.    Error running pod install  Error launching application on iPhone 12 Pro Max.  

And when I run flutter doctor it shows this:

[✓] Flutter (Channel stable, 2.0.3, on macOS 11.2 20D64 darwin-arm, locale en)  [✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)  [✓] Xcode - develop for iOS and macOS  [✓] Chrome - develop for the web  [✓] Android Studio (version 4.1)  [✓] VS Code (version 1.54.3)  [✓] Connected device (2 available)  

Please someone help with this issue it has been a problem for a while.

https://stackoverflow.com/questions/66756252/flutter-app-not-running-on-ioserror-output-from-cocoapods March 23, 2021 at 10:02AM