Fastlane Github Action Archive Fail with Run Script in Flutter iOS

Question

I'm currently using fastlane with github action to deploy my Flutter iOS apps to Testflight. I have all the keys and information matched up. However, the build keeps failing at phase Run Script.

`PhaseScriptExecution Run\ Script /Users/runner/Library/Developer/Xcode/DerivedData/Runner-avobjsyvghznfxgtyjuolmxrrfls/Build/Intermediates.noindex/ArchiveIntermediates/prod/IntermediateBuildFilesPath/Runner.build/Release-prod-iphoneos/Runner.build/Script-9740EEB61CF901F6004384FC.sh (in target 'Runner' from project 'Runner')`

The fastfile runs fine on my local machine (with the same keys set as ENV) but not on GitHub Action.

The script causing the issue is:

 `/bin/sh "${FLUTTER_ROOT}/packages/flutter_tools/bin/xcode_backend.sh" build` in the **Run Script** phase of Xcode

I tried adding {} around the FLUTTER ROOT but nothing changes.

I added configuration of my Project Runner Info but still same.

The code of my Github Workflow yaml is as followed:

name: Flutter CI

on:
  push:
    branches: xxx

jobs:
  deploy:
    name: Deploying to Testflight
    runs-on: macOS-latest
    
    steps:

      - name: Setup XCode on Machine    
        uses: maxim-lobanov/setup-xcode@v1
        with:
          xcode-version: '13.4'

      - name: Setup Flutter
        uses: subosito/[email protected]
        with:
          channel: 'stable'
          flutter-version: '3.3.9'

      - name: Give permission to private repo
        uses: shaunco/ssh-agent@git-repo-mapping
        with:
          ssh-private-key: |
            ${{ secrets.SECRET_REPO_DEPLOY_KEY }}
          repo-mappings: | 
            github.com/anfin21/package_library

      - name: Checkout repository
        uses: actions/checkout@v1
    
      - name: Install packages
        run: flutter pub get 

      - name: Deploy iOS Beta to TestFlight via Fastlane
        uses: maierj/[email protected]
        with:
          lane: closed_beta
          subdirectory: ios
        env:
          APP_STORE_CONNECT_TEAM_ID: '${{ secrets.ITC_TEAM_ID }}'
          DEVELOPER_APP_ID: '${{ secrets.APPLICATON_ID }}'
          DEVELOPER_APP_IDENTIFIER: '${{ secrets.BUNDLE_IDENTIFIER }}'
          DEVELOPER_PORTAL_TEAM_ID: '${{ secrets.DEVELOPER_PORTAL_TEAM_ID }}'
          FASTLANE_APPLE_ID: '${{ secrets.FASTLANE_APPLE_EMAIL_ID }}'
          FASTLANE_APPLE_APPLICATION_SPECIFIC_PASSWORD: '${{ secrets.FASTLANE_APPLE_APPLICATION_SPECIFIC_PASSWORD }}'
          MATCH_PASSWORD: '${{ secrets.MATCH_PASSWORD }}'
          GIT_AUTHORIZATION: '${{ secrets.GIT_AUTHORIZATION }}'
          PROVISIONING_PROFILE_SPECIFIER: '${{ secrets.PROVISIONING_PROFILE_SPECIFIER }}'
          TEMP_KEYCHAIN_PASSWORD: '${{ secrets.TEMP_KEYCHAIN_PASSWORD }}'
          TEMP_KEYCHAIN_USER: '${{ secrets.TEMP_KEYCHAIN_USER }}'
          APPLE_KEY_ID: '${{ secrets.APPLE_KEY_ID }}'
          APPLE_ISSUER_ID: '${{ secrets.APPLE_ISSUER_ID }}'
          APPLE_KEY_CONTENT: '${{ secrets.APPLE_KEY_CONTENT }}'

The FastFile of my iOS is as followed:

default_platform(:ios)
DEVELOPER_APP_ID = ENV["DEVELOPER_APP_ID"]
DEVELOPER_APP_IDENTIFIER = ENV["DEVELOPER_APP_IDENTIFIER"]
PROVISIONING_PROFILE_SPECIFIER = ENV["PROVISIONING_PROFILE_SPECIFIER"]
TEMP_KEYCHAIN_USER = ENV["TEMP_KEYCHAIN_USER"]
TEMP_KEYCHAIN_PASSWORD = ENV["TEMP_KEYCHAIN_PASSWORD"]
APPLE_ISSUER_ID = ENV["APPLE_ISSUER_ID"]
APPLE_KEY_ID = ENV["APPLE_KEY_ID"]
APPLE_KEY_CONTENT = ENV["APPLE_KEY_CONTENT"]
GIT_AUTHORIZATION = ENV["GIT_AUTHORIZATION"]

def delete_temp_keychain(name)
  delete_keychain(
    name: name
  ) if File.exist? File.expand_path("~/Library/Keychains/#{name}-db")
end

def create_temp_keychain(name, password)
  create_keychain(
    name: name,
    password: password,
    unlock: false,
    timeout: 0
  )
end

def ensure_temp_keychain(name, password)
  delete_temp_keychain(name)
  create_temp_keychain(name, password)
end

platform :ios do

  lane :closed_beta do
    keychain_name = TEMP_KEYCHAIN_USER
    keychain_password = TEMP_KEYCHAIN_PASSWORD
    ensure_temp_keychain(keychain_name, keychain_password)

    
    api_key = app_store_connect_api_key(
      key_id: APPLE_KEY_ID,
      issuer_id: APPLE_ISSUER_ID,
      key_content: APPLE_KEY_CONTENT,            
      duration: 1200,            
      in_house: false
    )

    cocoapods(
      clean_install: true,
    )

    match(
      type: 'appstore',
      app_identifier: "#{DEVELOPER_APP_IDENTIFIER}",
      git_basic_authorization: Base64.strict_encode64(GIT_AUTHORIZATION),
      readonly: false,
      keychain_name: keychain_name,
      keychain_password: keychain_password,
      api_key: api_key
    )

    gym(
      configuration: "Release",
      sdk: "iphoneos16.1",
      workspace: "Runner.xcworkspace",
      scheme: "prod",
      export_method: "app-store",
      export_options: {
        provisioningProfiles: { 
            DEVELOPER_APP_ID => PROVISIONING_PROFILE_SPECIFIER
        }
      }
    )

    pilot(
      apple_id: "#{DEVELOPER_APP_ID}",
      app_identifier: "#{DEVELOPER_APP_IDENTIFIER}",
      skip_waiting_for_build_processing: true,
      skip_submission: true,
      distribute_external: false,
      notify_external_testers: false,
      ipa: "./Runner.ipa"
    )

    delete_temp_keychain(keychain_name)
  end
end