error adding first user admin

I use Ubuntu 22.04.1 LTS.
After following all the instruction I am getting this error while creating an admin-level user when I run this command:
`node app @apostrophecms/user:add suman313 admin`

the error:
`suman313@DESKTOP-J22AUU3:/mnt/d/gitHubProjects/apostropheCMS/apos-app$ node app @apostrophecms/user:add suman313 admin
MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
at Timeout._onTimeout (/mnt/d/gitHubProjects/apostropheCMS/apos-app/node_modules/mongodb/lib/core/sdam/topology.js:438:30)
at listOnTimeout (node:internal/timers:559:17)
at processTimers (node:internal/timers:502:7) {
reason: TopologyDescription {
type: 'Single',
setName: null,
maxSetVersion: null,
maxElectionId: null,
servers: Map(1) { '127.0.0.1:27017' => [ServerDescription] },
stale: false,
compatible: true,
compatibilityError: null,
logicalSessionTimeoutMinutes: null,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
commonWireVersion: null
}
}`

Can anyone tell me what is wrong in this. The installation of this project is very complex. Takes so much time.

Start by checking the MongoDB connection used by `node app @apostrophecms/user:add suman313 admin`, especially `127.0.0.1:27017`, in the Ubuntu 22.04.1 LTS environment. Confirm the project can reach its database before retrying the command; done means the admin user is created without `MongoServerSelectionError`.

Written by the indexing model from the issue text.