MongooseServerSelectionError: connect ETIMEDOUT

Question

I recently ran into this problem. When I try to run my node js app, I get this error MongooseServerSelectionError: connect ETIMEDOUT . It also said type: 'ReplicaSetNoPrimary' . For the past few months it was working perfectly and I had never got this error. I am using MongoDB atlas for database and mongoose for its driver. I am using latest version of mongoose.

Here is my app.ts :

 const CONNECTION_URL = "mongodb+srv://name:<password>@cluster0.vyegx.mongodb.net/MyApp?retryWrites=true&w=majority" mongoose.connect(CONNECTION_URL).then(_INIT_) async function _INIT_(){ const server = app.listen(PORT, ()=>{ console.log("listening on port "+PORT+"...") }); const io = new Server(server); }

I have tried to whitelist my ip, but its not working.

UPDATE It works perfectly with no errors in heroku but when I try to run it from my computer it gives error

Answer 1

need to set useUnifiedTopology: false