I guess this problem is caused by interrupting cocoapods install. Here's fix:

• Remove ios/Flutter/Flutter.framework from your project
• Run pod install in ios directory. Flutter.framework should be generated, including Headers/Flutter.h file
• Run build. Everything should be working now

While switching to a different Flutter might work, it doesn't really solves a broken cache problem. Keep in mind that master and beta branches of Flutter are not suitable for production release.

For Anyone that comes here is 2021

Replace your pod file with this one

platform :ios, '12.0' 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 def flutter_install_ios_plugin_pods(ios_application_path = nil) ios_application_path ||= File.dirname(defined_in_file.realpath) if self.respond_to?(:defined_in_file) raise 'Could not find iOS application path' unless ios_application_path symlink_dir = File.expand_path('.symlinks', ios_application_path) system('rm', '-rf', symlink_dir) # Avoid the complication of dependencies like FileUtils. symlink_plugins_dir = File.expand_path('plugins', symlink_dir) system('mkdir', '-p', symlink_plugins_dir) plugins_file = File.join(ios_application_path, '..', '.flutter-plugins-dependencies') plugin_pods = flutter_parse_plugins_file(plugins_file) plugin_pods.each do |plugin_hash| plugin_name = plugin_hash['name'] plugin_path = plugin_hash['path'] if (plugin_name && plugin_path) symlink = File.join(symlink_plugins_dir, plugin_name) File.symlink(plugin_path, symlink) if plugin_name == 'flutter_ffmpeg' pod 'flutter_ffmpeg/full-lts', :path => File.join('.symlinks', 'plugins', plugin_name, 'ios') else pod plugin_name, :path => File.join('.symlinks', 'plugins', plugin_name, 'ios') end end end end target 'Runner' do use_frameworks! use_modular_headers! flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__)) end post_install do |installer| installer.pods_project.targets.each do |target| flutter_additional_ios_build_settings(target) end end 

And Run

flutter pub get cd ios pod install 

EDIT

if it doesn't work then

pod update flutter clean flutter run 

@Credit Latalus

Do this

rm ios/Flutter/Flutter.podspec flutter clean 

then run

flutter pub get 

and

pod install 

I've been searching for the answer to this all day and finally found a fix that works, run this in your terminal:

flutter channel master flutter clean flutter run 

I think it was just a flutter bug/incompatibility that hasn't made it out to the main channel yet.

1. flutter run [new project] and then replace the iOS folder to the exist project. (you need to backUp your iOS folder of the exist project.)

2. Replace the ios/Runner from the exist project to the new iOS folder.

3. Xcode settings same as exist project.

If iOS version problem appear, modify Podfile.

deployment_target = '11.0' post_install do |installer| installer.generated_projects.each do |project| project.targets.each do |target| target.build_configurations.each do |config| config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = deployment_target end end project.build_configurations.each do |config| config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = deployment_target end end end 

4. And then, cd ios , pod install.

5. Flutter run.

I had this problem when I tried to add a share button in my flutter project.

I solve it by following these steps:

1. Check your pubspec.yaml file.
2. You should be sure about your pod files and cocoapods. For this, you should follow these steps in terminal: Cannot Install Cocoapods - No podfile found in the project directory