Issue 1:
Xcode's output:

↳

error: Multiple commands produce '/Users/haoyi/TempProject/emp/build/ios/Debug-iphoneos/Runner.app/Frameworks/Flutter.framework':

1) Target 'Runner' has copy command from '/Users/haoyi/TempProject/emp/ios/Flutter/Flutter.framework' to '/Users/haoyi/TempProject/emp/build/ios/Debug-iphoneos/Runner.app/Frameworks/Flutter.framework'

2) That command depends on command in Target 'Runner': script phase “[CP] Embed Pods Frameworks”

warning: The iOS deployment target is set to 4.3, but the range of supported deployment target versions for this platform is 8.0 to 12.0. (in target 'image_picker')

warning: ignoring duplicated output file: '/Users/haoyi/TempProject/emp/build/ios/Debug-iphoneos/Runner.app/Frameworks/Flutter.framework' (in target 'Runner')

note: Using new build systemnote: Planning buildnote: Constructing build description

Xcode Version 10.0 (10A255)

➜ ~ flutter doctor -v

[✓] Flutter (Channel beta, v0.7.3, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)

• Flutter version 0.7.3 at /Users/haoyi/flutter

• Framework revision 3b309bd (3 weeks ago), 2018-08-28 12:39:24 -0700

• Engine revision af42b6d

• Dart version 2.1.0-dev.1.0.flutter-ccb16f7282

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)

• Android SDK at /Users/haoyi/Library/Android/sdk

• Android NDK location not configured (optional; useful for native profiling support)

• Platform android-27, build-tools 27.0.3

• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java

• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

• All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.0)

• Xcode at /Applications/Xcode.app/Contents/Developer

• Xcode 10.0, Build version 10A255

• ios-deploy 1.9.2

• CocoaPods version 1.5.0

[✓] Android Studio (version 3.1)

• Android Studio at /Applications/Android Studio.app/Contents

• Flutter plugin version 27.1.1

• Dart plugin version 173.4700

• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] IntelliJ IDEA Ultimate Edition (version 2018.2.3)

• IntelliJ at /Applications/IntelliJ IDEA.app

• Flutter plugin version 28.0.4

• Dart plugin version 182.4323.44

[✓] VS Code (version 1.27.1)

• VS Code at /Applications/Visual Studio Code.app/Contents

• Flutter extension version 2.18.0

[✓] Connected devices (3 available)

• 郝怿的 iPhone • 6d4a90c14794752f1d56db848716a8c609b7448b • ios • iOS 12.0

• iPhone XS • A4E0A17F-6E4A-48C0-8AE0-B16340BFF203 • ios • iOS 12.0 (simulator)

• iPhone XS Max • ADB38EB8-99FD-4908-BB20-8F53BA388661 • ios • iOS 12.0 (simulator)

• No issues found!

Issue 2:
When I want to debug the application in MacOs environment, it throw such error:

Multiple commands produce '/build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework

Target 'Runner' has copy command from '/ios/Flutter/Flutter.framework' to '/build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework'

That command depends on command in Target 'Runner': script phase “[CP] Embed Pods Frameworks”

warning: ignoring duplicated output file: '//build/ios/Debug-iphonesimulator/Runner.app/Frameworks/Flutter.framework' (in target 'Runner')

note: Using new build systemnote: Planning buildnote: Constructing build description

Mac 10.14 Beta

Xcode 10 beta

How to fix it? Thanks a lot