The following Swift pods cannot yet be integrated as static libraries: FireBaseCoreInternal and FireBaseStorage

Question

I'm having this problem, and I've already tried the basic solutions of use_frameworks! and use_modular_headers!, neither of which work for me, as they produce the same error:

The Swift pod FirebaseCoreInternal depends upon GoogleUtilities, which does not define modules. To opt into those targets generating module maps (which is necessary to import them from Swift when building as static libraries), you may set use_modular_headers! globally in your Podfile, or specify :modular_headers => true for particular dependencies.

The Swift pod FirebaseStorage depends upon FirebaseAppCheckInterop, FirebaseAuthInterop, FirebaseCore, FirebaseCoreExtension, and GTMSessionFetcher, which do not define modules. To opt into those targets generating module maps (which is necessary to import them from Swift when building as static libraries), you may set use_modular_headers! globally in your Podfile, or specify :modular_headers => true for particular dependencies.

Here is the following podfile. I've tried doing a lot of things, and I really don't know how to fix this and make it work:

Uncomment this line to define a global platform for your project

platform :ios, '11.0'

CocoaPods analytics sends network stats synchronously affecting flutter build latency.

ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
    'Debug' => :debug,
    'Profile' => :release,
    'Release' => :release,
}

def flutter_root
    generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter',   'Generated.xcconfig'), __FILE__)
unless File.exist?(generated_xcode_build_settings_path)
    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
end

File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
end
raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
    flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
    target 'RunnerTests' do
        inherit! :search_paths
    end
end

post_install do |installer|
    installer.pods_project.targets.each do |target|
        flutter_additional_ios_build_settings(target)
    end
end