AWS Local Stack Lambda function invocation result not available - aws-lambda

Question

I have very simple lambda function running on local stack and accessing dynamo db.
Function runs fine and I can see data in dynamodb with cli command as -
aws dynamodb scan --endpoint-url=http://localhost:4566 --table-name authors
But I am not able to get output from lambda function nor any logs from lambda function
That is : console.log('response == ',JSON.stringify(response)) is not getting printed
and the output from lambda return response is also not available in the josn file I gave while invoking lambda function (myop.json)
The myop.json file contains null
The command used to invoke lambda function is :
awslocal lambda invoke --function-name lambda-dynamodb-service-local-LambdaDynamoDB myop.json --region REGION
Can anybody please help here ?
Actual lambda code is here :
let AWS = require("aws-sdk");
AWS.config.update({
region: "REGION",
});
let docClient = new AWS.DynamoDB.DocumentClient({
endpoint:"IP ADDRSS:PORT"
});
exports.handler = function (event, context, callback) {
let data = null;
docClient.scan({
TableName: 'authors',
FilterExpression: '#name > :name',
ExpressionAttributeNames: {
'#name': 'name',
},
ExpressionAttributeValues: {
':name': "",
},
}, function(err, data) {
if (err) { console.log(err); return; }
console.log(data.Items);
data = data.Items;
});
let response = {
"statusCode": 200,
"body": JSON.stringify(data)
}
console.log('response == ',JSON.stringify(response));
return response
}