MongooseError: Operation `messages.insertOne()` buffering timed out after 10000ms - node.js

Question

I have seen many issues before this in correlation to my issue but all the fixes haven't helped my issue. However, I can now pinpoint the issue. The issue only occurs when I try save a something to the MongoDB with my Message Schema, the connection to the DB is perfectly fine just anything in accordance to the Message Schema breaks it. This is shown as I also have a gridfs & multer setup to save images which works perfectly fine as you will see below and in the console log results. The code is not as clean as I want it to be as I have been trying to fix this for the past few hours.
server.js (entry point)
const express = require('express');
const mongoose = require('mongoose');
const methodOverride = require('method-override');
const app = express();
const Grid = require('gridfs-stream');
const dbConnection = mongoose.createConnection('mongodb://localhost/messages', { useNewUrlParser: true, useUnifiedTopology: true });
let gfs;
dbConnection.once('open', () => {
console.log('Connected to MongoDB');
gfs = Grid(dbConnection.db, mongoose.mongo);
gfs.collection('uploads');
});
dbConnection.on('error', (err) => {
console.log('Error connecting to MongoDB: ' + err);
});
dbConnection.on('disconnected', () => {
console.log('Disconnected from MongoDB');
});
app.set('view engine', 'ejs');
const messageRouter = require('./routes/messages');
app.use('/posts', messageRouter);
app.use(express.urlencoded({ extended: false }));
app.use(express.json());
app.use(methodOverride('_method'));
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
models/message.js
const mongoose = require('mongoose');
const messageSchema = new mongoose.Schema({
message: {
type: String,
required: true
},
author: {
type: String,
required: true
},
date: {
type: Date,
required: true,
default: Date.now()
},
attachment: {
type: mongoose.SchemaTypes.ObjectId,
ref: 'File',
required: false
}
});
module.exports = mongoose.model('Message', messageSchema);
routes/messages.js
/*
Route for: host:port/posts
*/
const express = require('express');
const router = express.Router();
const path = require('path');
const crypto = require('crypto');
const multer = require('multer');
const {GridFsStorage} = require('multer-gridfs-storage');
const storage = new GridFsStorage({
url: 'mongodb://localhost/messages',
file: (req, file) => {
console.log('storage');
return new Promise((resolve, reject) => {
crypto.randomBytes(16, (err, buf) => {
if (err) {
return reject(err);
}
const filename = buf.toString('hex') + path.extname(file.originalname);
const fileInfo = {
filename: filename,
bucketName: 'uploads'
};
resolve(fileInfo);
});
});
}
});
const upload = multer({ storage });
const Message = require('../models/message');
router.post('/', upload.single('attachment'), async (req, res) => {
console.log("post recieved");
console.log(req.body.author, req.body.message);
var message = new Message({
message: req.body.message,
author: req.body.author
});
try{
message = await message.save()
console.log("post made");
res.send('Message saved');
} catch (e) {
res.send(e);
console.error(e);
}
})
module.exports = router;
When I input all the info the image gets saved so it is clearly not a connection/auth based issue and the console logs
Server is running on port 3000
Connected to MongoDB
storage
post recieved
Name Message
MongooseError: Operation `messages.insertOne()` buffering timed out after 10000ms
at Timeout.<anonymous> (C:\Coding\[REDACTED]\node_modules\mongoose\lib\drivers\node-mongodb-native\collection.js:151:23)
at listOnTimeout (node:internal/timers:557:17)
at processTimers (node:internal/timers:500:7)
The code had been working perfectly fine a month ago, I picked the project back up, edited a few lines and it has broken