MongoServerError: bad auth : Authentication failed for dotenv - mongodb

Question

when I use dotenv for hiding my password and username this error happens, but if I don't use dotenv the error disappears:
MongoServerError: bad auth : Authentication failed.
at Connection.onMessage (E:\my work\web development by zhankar\assignment\assignment-11-warehouse\warehouse-backend\node_modules\mongodb\lib\cmap\connection.js:203:30)
at MessageStream.<anonymous> (E:\my work\web development by zhankar\assignment\assignment-11-warehouse\warehouse-backend\node_modules\mongodb\lib\cmap\connection.js:63:60)
at MessageStream.emit (node:events:390:28)
at processIncomingData (E:\my work\web development by zhankar\assignment\assignment-11-warehouse\warehouse-backend\node_modules\mongodb\lib\cmap\message_stream.js:108:16)
at MessageStream._write (E:\my work\web development by zhankar\assignment\assignment-11-warehouse\warehouse-backend\node_modules\mongodb\lib\cmap\message_stream.js:28:9)
at writeOrBuffer (node:internal/streams/writable:389:12)
at _write (node:internal/streams/writable:330:10)
at MessageStream.Writable.write (node:internal/streams/writable:334:10)
at TLSSocket.ondata (node:internal/streams/readable:754:22)
at TLSSocket.emit (node:events:390:28) {
ok: 0,
code: 8000,
codeName: 'AtlasError',
[Symbol(errorLabels)]: Set(0) {}
}

Answer 1

You are likely using dotenv in the wrong way.
Show how are you passing the variables
Basically, this is a minimal example:
#.env file
username=john
password=alice
No spaces around the =
//server.js
require('dotenv')()
//that populates process.env
console.log(process.env.password, process.env.username)
So to be clear, your details are stored in the process.env object.