SetOptionError: useFindAndModify: "useFindAndModify" is not a valid option to set

Backend Development
1

I have been trying to run my server but still facing this error.
I am in the initial stage of my full-stack application ( Mern stack) .

At first, I started working on backend and stuck while connecting with db.

I am attaching the picture and complete code with link for more reference.

image
image826×461 16.4 KB 

import express from 'express';
import bodyParser from 'body-parser';
import mongoose from 'mongoose';
import cors from 'cors';



const app = express();

app.use(bodyParser.json({ limit: '30mb', extended: true }))
app.use(bodyParser.urlencoded({ limit: '30mb', extended: true }))
app.use(cors());



const CONNECTION_URL = '

';
const PORT = process.env.PORT|| 5000;

mongoose.connect(CONNECTION_URL, { useNewUrlParser: true, useUnifiedTopology: true  })
  .then(() => app.listen(PORT, () => console.log(`Server Running on Port: http://localhost:${PORT}`)))
  .catch((error) => console.log(error.message));

mongoose.set('useFindAndModify', false);

Screenshot 2023-05-16 153826
Screenshot 2023-05-16 1538261239×618 46 KB

2

@lasjorg Can you please help?

3

Remove the mongoose.set('useFindAndModify', false) option, it isn’t meant for the version of Mongoose you are using (it is for V5, not V7). You can’t use the deprecated methods anymore.

https://mongoosejs.com/docs/5.x/docs/deprecations.html#findandmodify
https://mongoosejs.com/docs/5.x/docs/api/mongoose.html#mongoose_Mongoose-set

Or you can downgrade the version, but I don’t really see a good reason for it.

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