How to use new method instead of this method calling user email

Hi,
We are using an method
def call(Map config) {
def requestorEmail = config.requestorEmail
def parentJiraIssueKey = config.jiraIssueKey
def projectGroupId = config.projectGroupId
def projectArtifactId = config.projectArtifactId
def projectVersion = config.projectVersion
def rollbackVersion = config.rollbackVersion
def deploymentDescription = config.deploymentDescription
def testingNotes = config.testingNotes
def deploymentType = config.deploymentType

def jiraSite = 'caleres'
def deploymentProjectKey = 'RID'

echo "${parentJiraIssueKey}"

def jiraIssue = jiraGetIssue(idOrKey: parentJiraIssueKey, site: "${jiraSite}")
echo "Found issue: ${jiraIssue.data.key} - ${jiraIssue.data.summary}"

** def requestor = jiraUserSearch(queryStr: “${requestorEmail}”, site: “${jiraSite}”).data[0]**
this line with ** search for the user with email is throwing an error at this step for querystr

JIRA: Site - cal - Searching JIRA Active Users: null startAt: 0 maxResults: 1000

Error Code: 400

Error Message: {“errorMessages”:[“The query parameter ‘username’ is not supported in GDPR strict mode.”],“errors”:{}}

{“errorMessages”:[“The query parameter ‘username’ is not supported in GDPR strict mode.”],“errors”:{}}

which method should i use to avoid this error