ошибка при разборе ответа JSON с использованием Groovy

Question

import groovy.json.JsonSlurper
def testStepName = 'Adding_Users'

def jsonSlurper = new JsonSlurper()
def response = context.expand('$(testStepName#Response)')
def usersInfomration = jsonSlurper.parseText(response)
String userName = userInformation.name
log.info UserName