Need to insert data in Neptune database using gremlin in nodejs codebase

Hi, I am trying to insert the in neptune through nodejs API using gremlin however when I am trying to insert nested array of object I keep getting error-599 (server error). Below I am mentioning the controller, data to be inserted and error. I would request to please check fix my controller or tell me what exactly needs to be fixed.

Controller

const gremlin = require('gremlin');
const { DriverRemoteConnection } = gremlin.driver;
const { Graph, __, T } = gremlin.structure;
const { v4: uuidv4 } = require('uuid');

const dotenv = require('dotenv');
dotenv.config();

const ClusterEndpoint = process.env.CLUSTER_ENDPOINT;
const Port = 8182;

const dc = new DriverRemoteConnection(`wss://${ClusterEndpoint}:${Port}/gremlin`, {});

const graph = new Graph();
const g = graph.traversal().withRemote(dc);
module.exports.insertNode = async (req, res) => {
  try {
    const data = req.body;
    console.log(data);

    for (const entry of data.data) {
      const vertex = g.addV('Document').property('label', data.label);

      for (const [key, value] of Object.entries(entry)) {
        if (typeof value !== 'object') {
          // Handle simple properties
          vertex.property(key, value);
        } else {
          // Handle nested properties
          const nestedVertex = g.addV(key);
          for (const [nestedKey, nestedValue] of Object.entries(value)) {
            nestedVertex.property(nestedKey, nestedValue);
          }
    // Add the nested vertex
    const nestedVertexResult = await nestedVertex.next();
    
    // Add the edge
    await vertex.addE('Has' + key).to(nestedVertexResult.value).next();
        }
      }

      await vertex.next();
    }

    console.log('Data inserted successfully.');
  } catch (error) {
    console.error('Error inserting data:', error);
  } finally {
    // Ensure to close the connection properly
    await dc.close();
  }
};

Error

Error inserting data: ResponseError: Server error: {"requestId":"1540dfa7-a2aa-44a1-990a-f3af5fad9523","code":"InternalFailureException"} (599)
    at Connection._handleMessage (/home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/gremlin/lib/driver/connection.js:345:9)
    at WebSocket.<anonymous> (/home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/gremlin/lib/driver/connection.js:141:43)
    at WebSocket.emit (events.js:376:20)
    at Receiver.receiverOnMessage (/home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/ws/lib/websocket.js:1209:20)
    at Receiver.emit (events.js:376:20)
    at Receiver.dataMessage (/home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/ws/lib/receiver.js:576:14)
    at /home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/ws/lib/receiver.js:534:12
    at /home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/ws/lib/permessage-deflate.js:309:9
    at /home/rajat.mahajan_ext/Downloads/neptune-Service/node_modules/ws/lib/permessage-deflate.js:392:7
    at afterWrite (internal/streams/writable.js:466:5) {
  statusCode: 599,
  statusMessage: '{"requestId":"1540dfa7-a2aa-44a1-990a-f3af5fad9523","code":"InternalFailureException"}',
  statusAttributes: Map(0) {}
}

Data to be inserted

{
    "status": true,
    "page": 1,
    "per_page": 100,
    "total_count": 2,
    "last_runtime": "2023-07-12T08:06:25.867000",
    "data": [
      {
        "doc_id": "014afd83-c14c-4722-8db8-96b479f65c3e",
        "changes_viewed": true,
        "case_id": "AVE-1515",
        "query_id": "71ccf54e-7b03-4d01-bae3-c8a4d61bb001",
        "doc_hash": -1989209532,
        "timestamp": "2023-07-12T08:06:25.902502Z",
        "status": "added",
        "saved": false,
        "identifier": "new",
        "elastic_id": "XJAjSYkBsN_giujMH9F0",
        "officer": {
          "id": 408330638,
          "uid": "08856538",
          "name": "VIPUL SHIVA KANT MISHRA",
          "jurisdiction_code": "in",
          "position": null,
          "retrieved_at": "2023-06-06T21:03:38+00:00",
          "opencorporates_url": "https://opencorporates.com/officers/408330638",
          "start_date": "2020-08-31",
          "end_date": null,
          "occupation": null,
          "current_status": null,
          "inactive": null,
          "address": null,
          "nationality": null,
          "date_of_birth": null,
          "company": {
            "name": "SEMICOLON INTERNET LLP",
            "jurisdiction_code": "in",
            "company_number": "AAT-6034",
            "opencorporates_url": "https://opencorporates.com/companies/in/AAT-6034"
          }
        },
        "neo_date": [
          "2020-08-31",
          "2023-06-06T21:03:38+00:00"
        ],
        "neo_location": [],
        "neo_person": [
          "VIPUL SHIVA KANT MISHRA"
        ],
        "neo_organisation": [
          "SEMICOLON INTERNET LLP"
        ],
        "monitoring_status": false
      }],
    "label": "L1(es)"
  }