Im trying to use parameters with workflows but I get error when i use it in the job

[kavyaimversion]

This is the config.yml that I’m using

version: 2

parameters:
  run_integration_tests:
    type: boolean
    default: false
    
  environment:
    type: string
    default: techcrunch.com

defaults: &defaults
  working_directory: ~/techcrunch-2017
  docker:
    - image: circleci/php:apache-node-browsers

jobs:
  build:
    <<: *defaults

    steps:
      - checkout

      # Set the host
      - run:
          name: Setup hosts
          command: echo 127.0.0.1 local.techcrunch.com | sudo tee -a /etc/hosts

      # Get latest master
      - run: 
          name: Get latest version of the code
          command: |
            git checkout master
            git fetch
            git reset --hard origin/master
            git checkout $CIRCLE_BRANCH
            
      # Production build
      - run:
          name: Start editor blocks production build
          command: |
            cd ~/techcrunch-2017/plugins/tc-blocks
            npm run build
      - run:
          name: Run ESLint on editor blocks plugin
          command: |
            cd ~/techcrunch-2017/plugins/tc-blocks
            node_modules/eslint/bin/eslint.js --color --max-warnings=0 .
            
  selenium_tests:
    docker:
      - image: circleci/openjdk:8-jdk-stretch-browsers

    environment:
      # Customize the JVM maximum heap limit
      MAVEN_OPTS: -Xmx3200m

    steps:
      - checkout
      
      - run: mkdir test-reports

      - run:
          name: Download Selenium
          command: |
            curl -O http://selenium-release.storage.googleapis.com/3.5/selenium-server-standalone-3.5.3.jar
      - run:
          name: Start Selenium
          command: |
            java -jar selenium-server-standalone-3.5.3.jar -log test-reports/selenium.log
          background: true

      - run: mvn dependency:go-offline

      - save_cache:
          paths:
            - ~/.m2
          key: v1-dependencies-{{ checksum "pom.xml" }}

      # run tests!
      - run: mvn integration-test -Denv=<< pipeline.parameters.environment >>
      
      - run:
          name: Save test results
          command: |
            mkdir -p ~/testng/results/
            find . -type f -regex "./extent-reports" -exec cp {} ~/testng/results/ \;
          when: always
      - store_test_results:
          path: ~/testng/results/
      - store_artifacts:
          path: ~/testng/results/
      - store_artifacts:
          path:  testng/results/

workflows:
  version: 2
  integration_tests:
    jobs:
      - build
      - selenium_tests

But I get this error when it’s building