NodeJS error: internal/modules/cjs/loader.js:905-Cannot find module './config'

I'm getting the following console error in my node application: Error: Cannot find module './config'

I've read up on similar questions (e.g. internal/modules/cjs/loader.js:582 throw err) so I've checked for duplicative folder/file names but could I be missing something?

Below is the full error I'm getting in the console after the "node app.js" command.

internal/modules/cjs/loader.js:905  throw err;    ^Error: Cannot find module './config'Require stack:- C:\Users\arthu\development\projectWhereWoof\dustyv3\backend\config\db.js- C:\Users\arthu\development\projectWhereWoof\dustyv3\backend\app.js  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)  at Function.Module._load (internal/modules/cjs/loader.js:746:27)  at Module.require (internal/modules/cjs/loader.js:974:19)  at require (internal/modules/cjs/helpers.js:92:18)  at Object.<anonymous (C:\Users\arthu\development\projectWhereWoof\dustyv3\backend\config\db.js:2:16)  at Module._compile (internal/modules/cjs/loader.js:1085:14)  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)  at Module.load (internal/modules/cjs/loader.js:950:32)  at Function.Module._load (internal/modules/cjs/loader.js:790:14)  at Module.require (internal/modules/cjs/loader.js:974:19)  at require (internal/modules/cjs/helpers.js:92:18)  at Object.<anonymous> (C:\Users\arthu\development\projectWhereWoof\dustyv3\backend\app.js:2:19)  at Module._compile (internal/modules/cjs/loader.js:1085:14)  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)  at Module.load (internal/modules/cjs/loader.js:950:32)  at Function.Module._load (internal/modules/cjs/loader.js:790:14) {code: 'MODULE_NOT_FOUND',requireStack: ['C:\\Users\\arthu\\development\\projectWhereWoof\\dustyv3\\backend\\config\\db.js','C:\\Users\\arthu\\development\\projectWhereWoof\\dustyv3\\backend\\app.js'  ]}

Below is my folder structure and code that I'm running.

• backend
  • config
    • db.js
    • default.json
  • models
    • Dogs.js
  • node_modules
  • routes
    • dogs.js
  • app.js
  • package-lock.json
  • package.json

//app.jsconst express = require('express');const connectDB = require('./config/db');var cors = require('cors');// routesconst dogs = require('./routes/dogs');const app = express();// Connect DatabaseconnectDB();// cors handling logicapp.use(cors({ origin: true, credentials: true }));// Init Middlewareapp.use(express.json({ extended: false }));app.get('/', (req, res) => res.send('Hello world!'));// use Routesapp.use('./routes/dogs', dogs);const port = process.env.PORT || 8082;app.listen(port, () => console.log(`Server running on port ${port}`));

//db.jsconst mongoose = require('mongoose');const config = require('./config');const db = config.get('mongoURI');const connectDB = async () => {   try {     await mongoose.connect(       db,       {         useNewUrlParser: true,         useUnifiedTopology: true        }    );    console.log('MongoDB is Connected...');  } catch (err) {    console.error(err.message);    process.exit(1);  }};module.exports = connectDB;

//default.json{"mongoURI":"mongodb+srv://INTENTOMITTED:INTENTOMITTED@INTENTOMITTED.oxagu.mongodb.net/myFirstDatabase?retryWrites=true&w=majority"}

//Dogs.jsconst mongoose = require('mongoose');const DogSchema = new mongoose.Schema({  name: {    type: String,    required: true  },  breedTypePrim: {    type: String,    required: true  },  breedTypeSec: {    type: String,    required: false  },  birthday: {    type: Date,    required: false  },  adoptionDate: {    type: Date,    required: true    },  weight: {      type: Number,      required: false    },  origin: {    type: String,    required: false  }});module.exports = Dog = mongoose.model('dog', DogSchema);

//dogs.jsconst express = require('express');const router = express.Router();// Load Dog modelconst Dog = require('../models/Dogs');// @route GET api/dogs/test// @description tests dogs route// @access Publicrouter.get('/test', (req, res) => res.send('dog route testing!'));// @route GET api/dogs// @description Get all dogs// @access Publicrouter.get('/', (req, res) => {  Dog.find()    .then(dogs => res.json(dogs))    .catch(err => res.status(404).json({ nodogsfound: 'No Dogs found' }));});// @route GET api/dogs/:id// @description Get single dog by id// @access Publicrouter.get('/:id', (req, res) => {  Dog.findById(req.params.id)    .then(dog => res.json(dog))    .catch(err => res.status(404).json({ nodogfound: 'No Dog found' }));});// @route GET api/dogs// @description add/save dog// @access Publicrouter.post('/', (req, res) => {  Dog.create(req.body)    .then(dog => res.json({ msg: 'Dog added successfully' }))    .catch(err => res.status(400).json({ error: 'Unable to add this dog' }));});// @route GET api/dogs/:id// @description Update dog// @access Publicrouter.put('/:id', (req, res) => {  Dog.findByIdAndUpdate(req.params.id, req.body)    .then(dog => res.json({ msg: 'Updated successfully' }))    .catch(err =>      res.status(400).json({ error: 'Unable to update the Database' })    );});// @route GET api/dogs/:id// @description Delete dog by id// @access Publicrouter.delete('/:id', (req, res) => {  Dog.findByIdAndRemove(req.params.id, req.body)    .then(dog => res.json({ mgs: 'Dog entry deleted successfully' }))    .catch(err => res.status(404).json({ error: 'No such a dog' }));});module.exports = router;