Unable to create/configure datasource in elasticsearch

Hello Experts,

I am using elasticsearch-7.3.1 and grafana-6.3.5 for log monitoring .
I am facing issue while creating database for elasticsearch in ‘time field name’ as shown in attached screenshot .

Error after clicking ‘save&Test’ :
“No date field named dateTime found”

My elasticsearch data -

“took”: 5,
“timed_out”: false,
“_shards”: {
“total”: 1,
“successful”: 1,
“skipped”: 0,
“failed”: 0
“hits”: {
“total”: {
“value”: 88,
“relation”: “eq”
“max_score”: 1,
“hits”: [{
“_index”: “test-grafana”,
“_type”: “_doc”,
“_id”: “XeeiFW0B8fYCDk2_TQS6”,
“_score”: 1,
“_source”: {
“dateTime”: “09/09/2019T16:16:55 +0530”,
“message”: “No active profile set, falling back to default profiles: default”,
“class”: “com.example.demo.DemoApplication”,
“loglevel”: “INFO”,
“transactionId”: “undefined”,
“hostName”: “HIBACL69325”,
“logType”: “APP”,
“platform”: “D20”,
“application”: “Replica”,
“businessProcesses”: “MM Flow”,
“activities”: “Modify Chart”


Could you please guide me on same as soon as possible .