Stuck after executing bat command in pipeline

Question

After logging on to jenkins service with my administrator account, this is happening... (according to this link Run batch file as administrator on Jenkins?)

this is my Jenkinsfile

#!/usr/bin/env groovy
pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                bat("cd C:/")
                echo 'Building..'
            }
        }
    }
}

And Console Output of this Jenkinsfile is this

...
[GitLab Pipeline Status] Notifying branch build status: RUNNING Dialogue/main: Build 
started...
[Pipeline] }
[Pipeline] // stage
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Build)
[Pipeline] bat

and then stuck.

Do you guys know why this happend?

ps) sorry for my English.