Neptune Loader throws LOAD_FAILED error

Hello,

I have been trying to add .csv files containing node and edge data to Neptune from S3 by following the steps from https://docs.aws.amazon.com/neptune/latest/userguide/bulk-load-data.html . When I do this, I get the error (I ran the curl command in the aws cloudshell):

curl: (28) Failed to connect to database-1-instance-1.cx0ll0stx64q.ap-south-1.neptune.amazonaws.com port 8182 after 130342 ms: Couldn't connect to server

after a couple of minutes.

When I went and made a SageMaker notebook and used the%load command to try and load the data, it gave the error LOAD_FAILED. Upon running the command %load_status <load_id> --details --errors(in place of <load_id> I entered the actual load ID), I get the following result:

{
  "status": "200 OK",
  "payload": {
    "feedCount": [
      {
        "LOAD_FAILED": 2
      }
    ],
    "overallStatus": {
      "fullUri": "s3://neptutest",
      "runNumber": 1,
      "retryNumber": 4,
      "status": "LOAD_FAILED",
      "totalTimeSpent": 6,
      "startTime": 1677234331,
      "totalRecords": 0,
      "totalDuplicates": 0,
      "parsingErrors": 0,
      "datatypeMismatchErrors": 0,
      "insertErrors": 0
    },
    "failedFeeds": [
      {
        "fullUri": "s3://neptutest/edges.csv",
        "runNumber": 1,
        "retryNumber": 4,
        "status": "LOAD_FAILED",
        "totalTimeSpent": 3,
        "startTime": 1677234334,
        "totalRecords": 0,
        "totalDuplicates": 0,
        "parsingErrors": 0,
        "datatypeMismatchErrors": 0,
        "insertErrors": 0
      },
      {
        "fullUri": "s3://neptutest/nodes.csv",
        "runNumber": 1,
        "retryNumber": 4,
        "status": "LOAD_FAILED",
        "totalTimeSpent": 0,
        "startTime": 1677234337,
        "totalRecords": 0,
        "totalDuplicates": 0,
        "parsingErrors": 0,
        "datatypeMismatchErrors": 0,
        "insertErrors": 0
      }
    ],
    "errors": {
      "startIndex": 0,
      "endIndex": 0,
      "loadId": "<load_id>",
      "errorLogs": []
    }
  }
}

What is the fix for this error?

Thanks a lot!