I have an AWS Lambda function written in Node.js that logs the event and returns it in the response. When I test this function using the AWS API Gateway test feature, it works perfectly and returns the full event object. However, when I test it with Postman, the event object appears empty in the response. Here is the code for the Lambda function:

export const handler = async (event, context, callback) => {
  // Log the headers to CloudWatch
  console.log('Received events:', event);

  // Create a response object containing the headers
  const response = {
    statusCode: 200,
    body: JSON.stringify(event, null, 2), // Pretty-print the JSON
  };

  // Return the response
  return response;
};

When tested with the AWS API Gateway, the response looks like this:

{
  "statusCode": 200,
  "body": "{n  "version": "2.0",n  "routeKey": "$default",n  "rawPath": "/path/to/resource",n  "rawQueryString": "parameter1=value1&parameter1=value2&parameter2=value",n  "cookies": [n    "cookie1",n    "cookie2"n  ],n  "headers": {n    "Header1": "value1",n    "Header2": "value1,value2"n  },n  "queryStringParameters": {n    "parameter1": "value1,value2",n    "parameter2": "value"n  },n  "requestContext": {n    "accountId": "123456789012",n    "apiId": "api-id",n    "authentication": {n      "clientCert": {n        "clientCertPem": "CERT_CONTENT",n        "subjectDN": "www.example.com",n        "issuerDN": "Example issuer",n        "serialNumber": "a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1:a1",n        "validity": {n          "notBefore": "May 28 12:30:02 2019 GMT",n          "notAfter": "Aug  5 09:36:04 2021 GMT"n        }n      }n    },n    "authorizer": {n      "jwt": {n        "claims": {n          "claim1": "value1",n          "claim2": "value2"n        },n        "scopes": [n          "scope1",n          "scope2"n        ]n      }n    },n    "domainName": "id.execute-api.us-east-1.amazonaws.com",n    "domainPrefix": "id",n    "http": {n      "method": "POST",n      "path": "/path/to/resource",n      "protocol": "HTTP/1.1",n      "sourceIp": "192.168.0.1/32",n      "userAgent": "agent"n    },n    "requestId": "id",n    "routeKey": "$default",n    "stage": "$default",n    "time": "12/Mar/2020:19:03:58 +0000",n    "timeEpoch": 1583348638390n  },n  "body": "eyJ0ZXN0IjoiYm9keSJ9",n  "pathParameters": {n    "parameter1": "value1"n  },n  "isBase64Encoded": true,n  "stageVariables": {n    "stageVariable1": "value1",n    "stageVariable2": "value2"n  }n}"
}

However, when I test with Postman, the response is:

curl --location 'https://site.amazonaws.com/beta/KlikyTestAPI' 
--header 'Content-Type: application/json' 
--header 'Accept: application/json' 
--header 'Authorization: ••••••'

Postman Response:

{
    "statusCode": 200,
    "body": "{}"
}

I don’t why is empty
Need help to resolve this