Jenkinsfile stash unstash

Jenkinsfile

pipeline{
    stages {
        stage('Checkout') {
            steps {
                checkout([
                    $class: '<repo_scm_type>', 
                    locations: [[
                        credentialsId: '<repo_credentials>', 
                        local: '.', 
                        remote: '<repo_url>']], 
                        workspaceUpdater: [$class: 'UpdateUpdater']])
                stash includes: '*', name: 'repo_root'
            }
        }
        stage('Build'){
            parallel {
                stage('<stage_name>'){
                    steps {
                        unstash 'repo_root'
                        sh 'build.sh'
                    }
                }
            }
        }
    }
}

there is a typo. missing ":" after name in stash includes: '*', name 'repo_root'

thanks @eprk1