我在这个问题上浪费了差不多一个星期，但毫无结果。
这是错误：

Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **

Xcode's output:
↳
    Writing result bundle at path:
        /var/folders/fq/7j2x58m57c9bk10jg7q47krr0000gn/T/flutter_tools.vyKPSp/flutter_ios_build_temp_di
        rGZCufm/temporary_xcresult_bundle

    Failed to package /Volumes/ME/Projects/Flutter-Proj/app.
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Building targets in dependency order
    warning: Run script build phase 'Create Symlinks to Header Folders' will be run during every
    build because it does not specify any outputs. To address this warning, either add output
    dependencies to the script phase, or configure it to run in every build by unchecking "Based on
    dependency analysis" in the script phase. (in target 'BoringSSL-GRPC' from project 'Pods')
    warning: Run script build phase 'Create Symlinks to Header Folders' will be run during every
    build because it does not specify any outputs. To address this warning, either add output
    dependencies to the script phase, or configure it to run in every build by unchecking "Based on
    dependency analysis" in the script phase. (in target 'abseil' from project 'Pods')
    warning: Run script build phase 'Create Symlinks to Header Folders' will be run during every
    build because it does not specify any outputs. To address this warning, either add output
    dependencies to the script phase, or configure it to run in every build by unchecking "Based on
    dependency analysis" in the script phase. (in target 'Libuv-gRPC' from project 'Pods')
    warning: Run script build phase 'Create Symlinks to Header Folders' will be run during every
    build because it does not specify any outputs. To address this warning, either add output
    dependencies to the script phase, or configure it to run in every build by unchecking "Based on
    dependency analysis" in the script phase. (in target 'gRPC-Core' from project 'Pods')
    warning: Run script build phase 'Create Symlinks to Header Folders' will be run during every
    build because it does not specify any outputs. To address this warning, either add output
    dependencies to the script phase, or configure it to run in every build by unchecking "Based on
    dependency analysis" in the script phase. (in target 'gRPC-C++' from project 'Pods')
    warning: Run script build phase 'Run Script' will be run during every build because it does not
    specify any outputs. To address this warning, either add output dependencies to the script
    phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the
    script phase. (in target 'Runner' from project 'Runner')
    note: Run script build phase 'Thin Binary' will be run during every build because the option to
    run the script phase "Based on dependency analysis" is unchecked. (in target 'Runner' from
    project 'Runner')
    warning: Run script build phase '[firebase_crashlytics] Crashlytics Upload Symbols' will be run
    during every build because it does not specify any outputs. To address this warning, either add
    output dependencies to the script phase, or configure it to run in every build by unchecking
    "Based on dependency analysis" in the script phase. (in target 'Runner' from project 'Runner')

    Result bundle written to path:
        /var/folders/fq/7j2x58m57c9bk10jg7q47krr0000gn/T/flutter_tools.vyKPSp/flutter_ios_build_temp_di
        rGZCufm/temporary_xcresult_bundle

Could not build the precompiled application for the device.

Error launching application on iPhone.

这些都是我曾经尝试过的事情：

• 清新的Flutter和豆荚
• rm Podfile.lock
• flutter clean
• flutter pub get
• pod repo update
• pod install
• 清除pod缓存并重新执行上述操作。
• 已重新安装Xcode、Flutter和Android Studio。
• 选中/取消选中For install builds only和/或Based on dependency analysis。
• 随之而来的是许多种解决办法：[这里]（How to fix Command PhaseScriptExecution failed with a nonzero exit code on flutter run in macOS?）、[这里]（Command PhaseScriptExecution failed with a nonzero exit code while trying to add Flutter to iOS app）和[这里]（Flutter Failed to package. Command PhaseScriptExecution failed with a nonzero exit code）。还有更多类似的。
• 使用pngcheck检查所有PNG文件是否有错误

以上都不起作用。
我的flutter doctor -v

[✓] Flutter (Channel stable, 3.3.4, on macOS 12.6 21G115 darwin-x64, locale en-US)
    • Flutter version 3.3.4 on channel stable at /Users/ME/development/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision eb6d86ee27 (5 days ago), 2022-10-04 22:31:45 -0700
    • Engine revision c08d7d5efc
    • Dart version 2.18.2
    • DevTools version 2.15.0
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn

[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
    • Android SDK at /Volumes/ME/Applications/Android/sdk
    • Platform android-32, build-tools 32.0.0
    • ANDROID_HOME = /Volumes/ME/Applications/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14A400
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.71.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.48.0

[✓] Connected device (3 available)
    • iPho (mobile) • 00012101-001965606543001E • ios            • iOS 15.6.1 19G82
    • macOS (desktop)     • macos                     • darwin-x64     • macOS 12.6 21G115
      darwin-x64
    • Chrome (web)        • chrome                    • web-javascript • Google Chrome
      105.0.5195.125

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!