Flutter：Log Details =〉Xcode build done.无法建立iOS应用程序，当我运行Flutter run iOS时，有人能帮我解决iOS相关的错误吗？

Xcode build done.                                           21.9s
    Failed to build iOS app
    Error output from Xcode build:
    ↳
        ** BUILD FAILED **
    Xcode's output:
    ↳
        === BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
        ld: warning: Could not find auto-linked library 'swiftFoundation'
        ld: warning: Could not find auto-linked library 'swiftMetal'
        ld: warning: Could not find auto-linked library 'swiftDarwin'
        ld: warning: Could not find auto-linked library 'swiftUIKit'
        ld: warning: Could not find auto-linked library 'swiftCoreFoundation'
        ld: warning: Could not find auto-linked library 'swiftQuartzCore'
        ld: warning: Could not find auto-linked library 'swiftCore'
        ld: warning: Could not find auto-linked library 'swiftCoreGraphics'
        ld: warning: Could not find auto-linked library 'swiftObjectiveC'
        ld: warning: Could not find auto-linked library 'swiftDispatch'
        ld: warning: Could not find auto-linked library 'swiftCoreMedia'
        ld: warning: Could not find auto-linked library 'swiftSwiftOnoneSupport'
        ld: warning: Could not find auto-linked library 'swiftCoreImage'
        ld: warning: Could not find auto-linked library 'swiftCoreAudio'
        Undefined symbols for architecture x86_64:

• • Flutter 医生-v**

[] Flutter（通道稳定，v1.9.1 + hotfix.6，在Mac OS X 10.14.6 18G87上，语言环境en-IN）·Flutter版本1.9.1 + hotfix.6位于/Users/btlmac/www/flutter·框架修订版68587a0916（10周前），2019年9月13日19：46：58 - 0700·引擎修订版b863200c37·Dart版本2.5.0
[] Android工具链-为Android设备开发（Android SDK版本28.0.3）·Android SDK位于/Users/btlmac/Library/Android/sdk·Android NDK位置未配置（可选;·Android平台Android-29，构建工具28.0.3·ANDROID_HOME =/Users/btlmac/Library/Android/sdk·Java二进制文件位于：/应用程序/Android www.example.com·Java版本OpenJDK运行时环境（内部版本1.8.0_152-版本-1024 -b01）·接受所有Android许可证。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.
[] Xcode-为iOS和macOS开发（Xcode 10.2.1）·Xcode位于/应用程序/www.example.com·Xcode 10.2.1，构建版本10E1001·CocoaPods版本1.8.4Xcode.app/Contents/Developer · Xcode 10.2.1, Build version 10E1001 · CocoaPods version 1.8.4
[] Android工作室（版本3.1）·Android工作室在/应用程序/Android www.example.com·Flutter插件版本29.0.1· dart 插件版本173.4700·Java版本OpenJDK运行时环境（构建1.8.0_152-release-1024-b01）Studio.app/Contents · Flutter plugin version 29.0.1 · Dart plugin version 173.4700 · Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
[] VS代码（版本1.40.1）·VS代码位于/应用程序/Visual Studio www.example.com·Flutter扩展版本3.6.0Code.app/Contents · Flutter extension version 3.6.0
[]连接设备（2可用）·联想X3a40·5453f602·安卓-arm64·安卓6.0.1（API 23）·iPhone X·A70C38B1-AE7B-4EF5-B570 - 8872C81C147B·ios·com·苹果·核心模拟器·模拟运行时·iOS-12 - 2（模拟器）
未发现问题!