Module 'fluttertoast' not found Xcode

Question

I have integrated fluttertoast in my app, I can't run it on real device, it shows Module 'fluttertoast' not found. I searched all over the internet, but nothing helped me. I can run it only on virtual device. How can I solve it ?.

This is my PodFile

# Uncomment this line to define a global platform for your project
platform :ios, '12.0'

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
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)
target.build_configurations.each do |config|
            config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
               '$(inherited)',

               ## dart: PermissionGroup.photos
               'PERMISSION_PHOTOS=1',
             ]
    end
end
end