this blueprint shows the error to me.  I verified the token and URL to be correct with curl command and its' fine.  
the error is as below: 
 START RequestId: 831062c6-f1cf-427f-b115-fd3bd7c07g93 Version: $LATEST 
 2019-04-03T16:41:01.704Z    831062c6-f1cf-427f-b115-fd3bd7c07t73    Received event: { "version": "0", "id": "b3cb20eb-f86e-2952-3ad1-a86b1e9e0ft9", "detail-type": "Scheduled Event", "source": "aws.events", "account": "xxxxxxxxxx", "time": "2019-04-03T16:37:27Z", "region": "us-east-1", "resources": [ "arn:aws:events:us-east-1:xxxxxxxx:rule/testsplunk" ], "detail": {} } 
 2019-04-03T16:41:01.705Z    831062c6-f1cf-427f-b115-fd3bd7c07t73    TypeError: Cannot read property 'data' of undefined at exports.handler (/var/task/index.js:34:45) 
						
					
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