I am getting the error because the url in mongoose.connect function is incorrect. What should I put in as the url to connect to the database.
var mongoose = require("mongoose");
mongoose.connect("mongodb://localhost/Blog");
var database = mongoose.connection;
database.on(
"error",
console.error.bind(console, "Error connecting to the database")
);
database.once("open", () =>
console.log("Successfully connected to the database")
);
module.exports = database;
Is a Mongo Database service running on that Heroku machine so that you can access it via localhost? If not, you should install it, otherwise you cannot connect to an non-existent service. Then, check on what port it is running, it is usually localhost:27017.