Every time I run npm start in my backend folder, my server runs successfully for a short time and then soon after crashes. I'm getting this error back from the command line:
[nodemon] restarting due to changes...
[nodemon] starting `babel-node ./index.js`
The basketball server is running on port: 3000
C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\connection.js:807
const serverSelectionError = new ServerSelectionError();
^
MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
at NativeConnection.Connection.openUri (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\connection.js:807:32)
at C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\index.js:342:10
at C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\helpers\promiseOrCallback.js:32:5
at new Promise (<anonymous>)
at promiseOrCallback (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:10)
at Mongoose._promiseOrCallback (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\index.js:1176:10)
at Mongoose.connect (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongoose\lib\index.js:341:20)
at Object.<anonymous> (C:/users/work/documents/codeprojects/learnmern/basketball/backend/index.js:10:10)
at Module._compile (node:internal/modules/cjs/loader:1097:14)
at loader (C:\Users\Work\AppData\Roaming\npm\node_modules\babel-cli\node_modules\babel-register\lib\node.js:144:5) {
reason: TopologyDescription {
type: 'Unknown',
servers: Map(1) {
'localhost:27017' => ServerDescription {
_hostAddress: HostAddress { isIPv6: false, host: 'localhost', port: 27017 },
address: 'localhost:27017',
type: 'Unknown',
hosts: [],
passives: [],
arbiters: [],
tags: {},
minWireVersion: 0,
maxWireVersion: 0,
roundTripTime: -1,
lastUpdateTime: 258048414,
lastWriteDate: 0,
error: MongoNetworkError: connect ECONNREFUSED ::1:27017
at connectionFailureError (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongodb\src\cmap\connect.ts:514:14)
at Socket.<anonymous> (C:\users\work\documents\codeprojects\learnmern\basketball\backend\node_modules\mongodb\src\cmap\connect.ts:412:16)
at Object.onceWrapper (node:events:640:26)
at Socket.emit (node:events:520:28)
at Socket.emit (node:domain:475:12)
at emitErrorNT (node:internal/streams/destroy:164:8)
at emitErrorCloseNT (node:internal/streams/destroy:129:3)
at processTicksAndRejections (node:internal/process/task_queues:83:21)
}
},
stale: false,
compatible: true,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
logicalSessionTimeoutMinutes: undefined
}
}
Node.js v17.4.0
[nodemon] app crashed - waiting for file changes before starting...
Here is an image that may help trouble shooting: screenshot of my index.js file and Mongo Compass
I'm very new to backend web development and am experiencing this error while atempting to follow along to a LINKEDIN LEARNING course on MERN. linked here: VIDEO 3 FROM THIS COURSE and am very grateful to anyone willing to take the time to help me solve my problem, thanks!
CodePudding user response:
From connect ECONNREFUSED ::1:27017
, it appears that Mongoose is trying to connect to ipv6 wherein your screenshots say mongod
is using ipv4
.
Use ipv4
ie., 127.0.0.1