bad auth : 그 무엇으로도 해결이 안되는 오류...

MongoServerError: bad auth : Authentication failed.
    at Connection.onMessage (/Users/minsungpark/Desktop/612Hak/626 db/hkback/node_modules/mongodb/lib/cmap/connection.js:202:26)
    at MessageStream.<anonymous> (/Users/minsungpark/Desktop/612Hak/626 db/hkback/node_modules/mongodb/lib/cmap/connection.js:61:60)
    at MessageStream.emit (node:events:513:28)
    at processIncomingData (/Users/minsungpark/Desktop/612Hak/626 db/hkback/node_modules/mongodb/lib/cmap/message_stream.js:124:16)
    at MessageStream._write (/Users/minsungpark/Desktop/612Hak/626 db/hkback/node_modules/mongodb/lib/cmap/message_stream.js:33:9)
    at writeOrBuffer (node:internal/streams/writable:392:12)
    at _write (node:internal/streams/writable:333:10)
    at Writable.write (node:internal/streams/writable:337:10)
    at TLSSocket.ondata (node:internal/streams/readable:766:22)
    at TLSSocket.emit (node:events:513:28) {
  ok: 0,
  code: 8000,
  codeName: 'AtlasError',
  connectionGeneration: 0,
  [Symbol(errorLabels)]: Set(2) { 'HandshakeError', 'ResetPool' }
}

Node.js v18.16.0
- error MongoServerError: bad auth : Authentication failed.
    at MessageStream.emit (node:events:513:28)
    at TLSSocket.emit (node:events:513:28)
- error MongoServerError: bad auth : Authentication failed.
    at MessageStream.emit (node:events:513:28)
    at TLSSocket.emit (node:events:513:28)
digest: "4278190690"
- wait compiling...
- event compiled successfully in 150 ms (271 modules)
- wait compiling...
- event compiled successfully in 217 ms (218 modules)
- error MongoServerError: bad auth : Authentication failed.
    at MessageStream.emit (node:events:513:28)
    at TLSSocket.emit (node:events:513:28)
- error MongoServerError: bad auth : Authentication failed.
    at MessageStream.emit (node:events:513:28)
    at TLSSocket.emit (node:events:513:28)
digest: "4278190690"
- wait compiling /favicon.ico/route (client and server)...
- event compiled successfully in 71 ms (271 modules)

코드:

(database.js)

import { MongoClient } from "mongodb"

const url = 'mongodb+srv://<admin>:<qwer1234>@cluster0.7cijgqc.mongodb.net/?retryWrites=true&w=majority'
const options = { useNewUrlParser: true }
let connectDB

if (process.env.NODE_ENV === 'development') {
if (!global._mongo) {
global._mongo = new MongoClient(url, options).connect()
 }
connectDB = global._mongo
} else {
connectDB = new MongoClient(url, options).connect()
}
export { connectDB }

(page.js)

import { connectDB } from "./util/database"
import { MongoClient } from "mongodb";

export default async function Home() {

const db = (await connectDB).db('forum');
let result = await db.collection('post').find().toArray();
console.log(result)

return (
<main>
{result[0].title}
</main>
 )
}

사용자 이름과 비밀번호는 틀리지 않았는데, 다시 만들어도 보고 인터넷에 나와 있는 어떤 짓을 해봐도 이 에러를 해결할 수가 없습니다.. 진도를 나갈 수가 없습니다 ㅠㅠ

<div id="__endic_crx__">
<div class="css-diqpy0">
</div>
</div>
<div id="__endic_crx__">
<div class="css-diqpy0"> </div>
</div>