Mongodb – MongoNetworkError: AggregateError has an empty errors array

I have a health check endpoint in my application which simply pings a mongo reserve cluster. But for some reason I frequently get this error log on the health check endpoint.

MongoNetworkError: AggregateError has an empty errors array. Please check the cause property for more information. [cause]: AggregateError at emitErrorCloseNT (node:internal/streams/destroy:116:3) at emitErrorNT (node:internal/streams/destroy:151:8)

I’m also getting other errors as

PoolClearedError [MongoPoolClearedError]: Connection pool for <server__> was cleared because another operation failed with: "connection <monitor> to <some IP __> closed"

PoolClearedError [MongoPoolClearedError]: Connection pool for <server__> was cleared because another operation failed with: "AggregateError has an empty errors array. Please check the cause property for more information."

I don’t understand why I’m getting this error, I’m not even using an aggregation query and technically if there was a connection error mongoDB throws Network timeout errors. Can someone please help me understand why this error is coming and how to fix this.

Below is the ping code

const { db } = await mongoDbClient.connectToDatabase2();
const result = db.command({ ping: 1 });

Below is the mongoclient class

import { Db, MongoClient, MongoClientOptions } from 'mongodb';

export default class MongoDbClient {
    cachedClient2: MongoClient | undefined;
    cachedDb2: Db | undefined;
    
    constructor() {
        this.connectToDatabase2();
    }

    async connectToDatabase2() {
        if (this.cachedClient2 && this.cachedDb2) {
            return {
                client: this.cachedClient2,
                db: this.cachedDb2,
            };
        }
        const opts: MongoClientOptions = {
            minPoolSize: 10,
            maxPoolSize: 50,
        };
        const client = new MongoClient(process.env.MONGODB_URI2, opts);
        await client.connect();
        const db = client.db(process.env.MONGODB_DB);
        this.cachedClient2 = client;
        this.cachedDb2 = db;
        return {
            client: this.cachedClient2,
            db: this.cachedDb2,
        };
    }
}