[Flutter]CocoaPods could not find compatible versions for pod

에러코드 

[!] CocoaPods could not find compatible versions for pod "kakao_flutter_sdk":
  In Podfile:
    kakao_flutter_sdk (from `.symlinks/plugins/kakao_flutter_sdk/ios`)

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

해결 : https://stackoverflow.com/questions/55596988/flutter-facebook-login-cocoapods-dependency-error

Podfile 에서 paltform : ios, '9.0' 을 platform : ios, '11.0' 으로 고침