what kind of error is that Error: useCreateIndex is an invalid option. at Mongoose.set (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongoose\lib\index.js:173:48)

[vnxz]

I downloaded old node.js project file and run
here is its db connection file

var mongoDB = "mongodb://admin:admin@localhost:27017/";
var chalk = require('chalk');

var connected = chalk.bold.cyan;
var error = chalk.bold.yellow;
var disconnected = chalk.bold.red;
var termination = chalk.bold.magenta;
require('dotenv').config();

mongoose.ais_mlm = mongoose.createConnection(`${mongoDB}${process.env.DB_NAME}?authSource=admin`, {  
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useFindAndModify: false,
    useCreateIndex: true});

mongoose.connection.on('connected', function(){
    console.log(connected("Mongoose default connection is open to ", mongoDB));
});

mongoose.connection.on('error', function(err){
    console.log(error("Mongoose default connection has occured "+err+" error"));
});

mongoose.connection.on('disconnected', function(){
    console.log(disconnected("Mongoose default connection is disconnected"));
});

process.on('SIGINT', function(){
    mongoose.connection.close(function(){
        console.log(termination("Mongoose default connection is disconnected due to application termination"));
        process.exit(0)
    });
});
module.exports.mongoDB = mongoose;

here is env file

APP_URL_SERVER=http://35.240.172.71:8080
DB_NAME=ais_mlm

when I run this
get the following error
error source come from node modules
I dont know why this happen
can someone explain me
where can I correct to run this file

[nodemon] restarting due to changes...
[nodemon] starting `node index.js`
C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongoose\lib\index.js:173
  if (VALID_OPTIONS.indexOf(key) === -1) throw new Error(`\`${key}\` is an invalid option.`);
                                         ^

Error: `useCreateIndex` is an invalid option.
    at Mongoose.set (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongoose\lib\index.js:173:48)
    at Object.<anonymous> (C:\Users\PC\Desktop\multi-level-marketing-management\app\models\PositionModel.js:4:9)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)   
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)        
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)     
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (C:\Users\PC\Desktop\multi-level-marketing-management\app\Ais\Repository\User.js:10:23)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)   
[nodemon] app crashed - waiting for file changes before starting...
[nodemon] restarting due to changes...
[nodemon] starting `node index.js`
C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongoose\lib\index.js:173
  if (VALID_OPTIONS.indexOf(key) === -1) throw new Error(`\`${key}\` is an invalid option.`);
                                         ^

Error: `useCreateIndex` is an invalid option.
    at Mongoose.set (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongoose\lib\index.js:173:48)
    at Object.<anonymous> (C:\Users\PC\Desktop\multi-level-marketing-management\app\models\PositionModel.js:4:9)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)   
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)        
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)     
    at require (internal/modules/cjs/helpers.js:88:18)
    at Object.<anonymous> (C:\Users\PC\Desktop\multi-level-marketing-management\app\Ais\Repository\User.js:10:23)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)   
[nodemon] app crashed - waiting for file changes before starting...

[DavideViolante]

This option is deprecated since v6 if I'm not mistaken, try to remove it from the options object.

[vnxz]

This option is deprecated since v6 if I'm not mistaken, try to remove it from the options object.

thanks bro for pointing the error
I edited some part of code
finally , one error still happen
that due to custom localhost url

DATA = "mongodb://admin:admin@localhost:27017/ais_mlm?authSource=admin"

when use this url
db connection failed
but with this url .db connect success

DATA = "mongodb://localhost:27017/ais_mlm"

I want to know is how can correct this error by custom localhost url
this also use chalk for custom url
but error still happen
How can fix it

const mongoose = require("mongoose");
//const mongoDB = "mongodb://admin:admin@localhost:27017/ais_mlm?authSource=admin";
const chalk = require('chalk');
const path = require('path');
const connected = chalk.bold.cyan;
const error = chalk.bold.yellow;
const disconnected = chalk.bold.red;
const termination = chalk.bold.magenta;
require('dotenv').config({ path: path.resolve(__dirname, '../.env') });
console.log('here...', path.resolve(__dirname, '../.env'),process.env.DATA);

 mongoose.connect(process.env.DATA, async(err)=>{
    if(err) throw err;
    console.log("conncted to db")
  }
 );

mongoose.connection.on('connected', function(){
    console.log(connected("Mongoose default connection is open to ", process.env.DATA));
});

mongoose.connection.on('error', function(err){
    console.log(error("Mongoose default connection has occured "+err+" error"));
});

mongoose.connection.on('disconnected', function(){
    console.log(disconnected("Mongoose default connection is disconnected"));
});

process.on('SIGINT', function(){
    mongoose.connection.close(function(){
        console.log(termination("Mongoose default connection is disconnected due to application termination"));
        process.exit(0)
    });
});

here is error output

Mongoose default connection is disconnected
Mongoose default connection has occured MongoServerError: Authentication failed. error
(node:22380) UnhandledPromiseRejectionWarning: MongoServerError: Authentication failed.
    at MessageStream.messageHandler (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongodb\lib\cmap\connection.js:467:30)
    at MessageStream.emit (events.js:315:20)
    at processIncomingData (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongodb\lib\cmap\message_stream.js:108:16)
    at MessageStream._write (C:\Users\PC\Desktop\multi-level-marketing-management\app\node_modules\mongodb\lib\cmap\message_stream.js:28:9)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at MessageStream.Writable.write (internal/streams/writable.js:303:10)
    at Socket.ondata (internal/streams/readable.js:719:22)
    at Socket.emit (events.js:315:20)
    at addChunk (internal/streams/readable.js:309:12)
    at readableAddChunk (internal/streams/readable.js:284:9)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:22380) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:22380) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I think uername is admin password is admin

how can auth this credentials in mondb
here is its database
but still not insert any data

it make nonsense why cannot access

[vkarpov15]

@vnxz the error you're getting is "authentication failed", so that means you're not providing the correct username, password, or authSource. I suspect the issue is that you're manually inserting users from the mongodb shell, rather than creating them using the MongoDB shell's createUser() function.

[lakshmankashyap]

useCreateIndex is no longer necessary in Mongoose 6, please remove it when you upgrade