Flutter - The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0 && Build input file cannot be found GoogleService-Info.plist

Question

I cannot build a Flutter app on iOS simulator. I am getting this error over and over. My flutter-doctor is clean.

 Launching lib/main.dart on iPhone SE (2nd generation) in debug mode...
    Xcode build done.                                           26,7s
    Failed to build iOS app
    Error output from Xcode build:
    ↳
        ** BUILD FAILED **
    Xcode's output:
    ↳
        error: Build input file cannot be found: '/Users/User/Downloads/GoogleService-Info.plist' (in target 'Runner' from project 'Runner')
        note: Using new build system
        note: Building targets in parallel
        note: Planning build
        note: Constructing build description
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'AppAuth' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'GTMAppAuth' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-Core' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'BoringSSL-GRPC' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 5.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'leveldb-library' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-C++-gRPCCertificates-Cpp' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 4.3, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'nanopb' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'GTMSessionFetcher' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-C++' from project 'Pods')
        warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'abseil' from project 'Pods')
    Could not build the application for the simulator.
    Error launching application on iPhone SE (2nd generation).
    Exited (sigterm)

Answer 1

To get rid of this warning:

    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'AppAuth' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'GTMAppAuth' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-Core' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'BoringSSL-GRPC' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 5.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'leveldb-library' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-C++-gRPCCertificates-Cpp' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 4.3, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'nanopb' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'GTMSessionFetcher' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'gRPC-C++' from project 'Pods')
    warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range of supported deployment target versions is 8.0 to 13.4.99. (in target 'abseil' from project 'Pods')

Make sure your Podfile contains this line

config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '9.0'

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'
        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '9.0'
    end
  end
end

To make the app build successfully and get rid of:

error: Build input file cannot be found: '/Users/User/Downloads/GoogleService-Info.plist' (in target 'Runner' from project 'Runner')

remove and add again through Xcode, the GoogleService-Info.plist file.