// instead of this
const url = "mongodb://localhost:27017";
// Just Replace
const url = "mongodb://0.0.0.0:27017";
// Try using 127.0.0.1 instead of localhost in connection url
// mongodb://localhost:27017
// mongodb://127.0.0.1:27017
const mongoose = require('mongoose');
mongoose.connect('mongodb://127.0.0.1:27017').then(() => {
console.log("connected to database");
})mongodb://localhost:27017/{DATABASE_NAME}This happened probably because the MongoDB service isn't started. Follow the below steps to start it:
Go to Control Panel and click on Administrative Tools.
Double click on Services. A new window opens up.
Search MongoDB.exe. Right click on it and select Start.
The server will start. Now execute npm start again and the code might work this time.