In order to follow best practices,

i’ve changed the packages names accordingly but suddenly received an error on the server

private@Privates-MacBook-Pro Fullstack-project % ls

PROJECT1

private@Privates-MacBook-Pro Fullstack-project % cd PROJECT1

private@Privates-MacBook-Pro PROJECT1 % ls

client          common          node_modules    package.json    server          yarn.lock

private@Privates-MacBook-Pro PROJECT1 % cd common

private@Privates-MacBook-Pro common % ls

index.js        node_modules    package.json    yarn.lock

private@Privates-MacBook-Pro common % cd ..

private@Privates-MacBook-Pro PROJECT1 % cd server
private@Privates-MacBook-Pro server % ls
controllers     index.js        package.json    routers         yarn.lock

private@Privates-MacBook-Pro server % yarn dev

yarn run v1.22.22
$ nodemon index.j
[nodemon] 3.1.0
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): *.*
[nodemon] watching extensions: js,mjs,cjs,json
[nodemon] starting `node index.j index.js`
node:internal/modules/cjs/loader:1146
  throw err;
  ^

Error: Cannot find module '@mystartup/common'
Require stack:
- /Users/private/my-app/Fullstack-project/PROJECT1/server/controllers/validateForm.js
- /Users/private/my-app/Fullstack-project/PROJECT1/server/routers/authRouter.js
- /Users/private/my-app/Fullstack-project/PROJECT1/server/index.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:1143:15)
    at Module._load (node:internal/modules/cjs/loader:984:27)
    at Module.require (node:internal/modules/cjs/loader:1231:19)
    at require (node:internal/modules/helpers:179:18)
    at Object.<anonymous> (/Users/private/my-app/Fullstack-project/PROJECT1/server/controllers/validateForm.js:1:24)
    at Module._compile (node:internal/modules/cjs/loader:1369:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32)
    at Module._load (node:internal/modules/cjs/loader:1022:12)
    at Module.require (node:internal/modules/cjs/loader:1231:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/private/my-app/Fullstack-project/PROJECT1/server/controllers/validateForm.js',enter image description here
    '/Users/private/my-app/Fullstack-project/PROJECT1/server/routers/authRouter.js',
    '/Users/private/my-app/Fullstack-project/PROJECT1/server/index.js'
  ]
}

Node.js v20.12.2
[nodemon] app crashed - waiting for file changes before starting...

Attaching print screens of my jason ( server and common) + validateForm.js (inside controllers folder / server)

enter image description here

I followed this video from 1:00 to 3:41 min and did exactly that

Right after, i was running a yarn dev and got this error ( checked all the names milions of time, all is just like on the video – p.s. there is also a link on the video with all the related files:

https://github.com/lesterfernandez/react-live-messenger/tree/05.share.schema

I was trying to clean cache, “rm -rf node_modules” and reinstall yarn but nothing helped to resolve.

yarn cache clean

yarn cache v1.22.22
success Cleared cache.
✨  Done in 0.08s.
private@Privates-MacBook-Pro server % yarn config list

yarn config v1.22.22
info yarn config
{
  'version-tag-prefix': 'v',
  'version-git-tag': true,
  'version-commit-hooks': true,
  'version-git-sign': false,
  'version-git-message': 'v%s',
  'init-version': '1.0.0',
  'init-license': 'MIT',
  'save-prefix': '^',
  'bin-links': true,
  'ignore-scripts': false,
  'ignore-optional': false,
  registry: 'https://registry.yarnpkg.com/',
  'strict-ssl': true,
  'user-agent': 'yarn/1.22.22 npm/? node/v20.12.2 darwin x64',
  lastUpdateCheck: 1713973321143
}
info npm config
{}
✨  Done in 0.03s.
private@Privates-MacBook-Pro server % rm -rf node_modules

private@Privates-MacBook-Pro server % rm package-lock.json
rm: package-lock.json: No such file or directory
private@Privates-MacBook-Pro server % yarn install
yarn install v1.22.22
[1/4] ????  Resolving packages...
error Error: https://registry.yarnpkg.com/@mystartup%2fcommon: Not found
    at params.callback [as _callback] (/Users/private/.cache/node/corepack/v1/yarn/1.22.22/lib/cli.js:66680:18)
    at self.callback (/Users/private/.cache/node/corepack/v1/yarn/1.22.22/lib/cli.js:141410:22)
    at Request.emit (node:events:518:28)
    at Request.<anonymous> (/Users/private/.cache/node/corepack/v1/yarn/1.22.22/lib/cli.js:142382:10)
    at Request.emit (node:events:518:28)
    at IncomingMessage.<anonymous> (/Users/private/.cache/node/corepack/v1/yarn/1.22.22/lib/cli.js:142304:12)
    at Object.onceWrapper (node:events:632:28)
    at IncomingMessage.emit (node:events:530:35)
    at endReadableNT (node:internal/streams/readable:1696:12)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

I need your help to resolve the error. it is my first time when i rename tha package names “@..”