mongoose.connect(
  "mongodb+srv://unifeso:[email protected]/unifeso-financial-control?retryWrites=true&w=majority",
  {
    useNewUrlParser: true,
    useUnifiedTopology: true
  }
);
const db = mongoose.connection;
db.on("error", console.error.bind(console, "Connection error: "));
db.once("open", function () {
  console.log("MongoDB Connected.");
});