Azure 管道 Flutter Firebase 项目 iOS 生成错误

问：

使用 azure pipeline 构建一个 flutter firebase 项目，flutter build 和 pod install 都成功了，但 xcode 找不到 firebase-core 模块。

我的源构建在 Mac 上成功，但在 Azure Pipeline 上失败。 我的管道：

trigger:
- none

pool:
  vmImage: 'macos-latest'
  
variables:
      # FYI: Did you know, all Azure Pipeline variables are added to the build system environment?
      # The following variables will prevent Xcode from code-signing during build.
      # This is necessary, because we do not want to CI builds to be sensitive to code-signing settings configured by 
      # developers during development.
      # The 'exportOptions' will ultimately handle the code signing with the correct cert/prov profile.
      FLUTTER_XCODE_CODE_SIGN_IDENTITY: ""
      FLUTTER_XCODE_CODE_SIGNING_REQUIRED: NO 
steps:
- task: InstallAppleCertificate@2
  inputs:
    certSecureFile: 'certificate.p12'
    certPwd: 'password'
    keychain: 'temp'
- task: InstallAppleProvisioningProfile@1
  inputs:
    provisioningProfileLocation: 'secureFiles'
    provProfileSecureFile: 'myapp.mobileprovision'  
- task: FlutterInstall@0
  inputs:
    mode: 'auto'
    channel: 'stable'
    version: 'custom'
    customVersion: '3.10.5'
- task: FlutterBuild@0
  inputs:
    target: 'ipa'
    projectDirectory: '.'
    exportOptionsPlist: 'ios/ExportOptions.plist'   
    extraArgs: '--release --obfuscate --split-debug-info=$(Build.SourcesDirectory)/build'

- task: CmdLine@2
  inputs:
    script: 'cd ios && pod install'
- task: Xcode@5
  inputs:
    actions: 'build'
    scheme: ''
    sdk: 'iphoneos'
    configuration: 'Release'
    xcWorkspacePath: '**/*.xcodeproj/project.xcworkspace'
    xcodeVersion: 'default' # Options: 8, 9, 10, 11, 12, default, specifyPath
- task: Xcode@5
  displayName: 'Xcode Archive iOS'
  inputs:
    actions: 'archive'
    xcWorkspacePath: 'ios/Runner.xcworkspace'
    scheme: 'Runner'
    sdk: 'iphoneos'
    packageApp: true
    signingOption: 'manual'
    configuration: 'Release'
    exportOptionsPlist: 'ios/ExportOptions.plist'
    signingIdentity: '$(APPLE_CERTIFICATE_SIGNING_IDENTITY)'
    provisioningProfileUuid: '$(APPLE_PROV_PROFILE_UUID)'

(https://i.stack.imgur.com/AWYY9.png)

(https://i.stack.imgur.com/EuH85.png)

(https://i.stack.imgur.com/WscWv.png)

flutter build 和 pod install 都成功了，但是 xcode 找不到模块 firebase-core ，有什么帮助吗？