Running npm start on pm2 server returns Error: Cannot find module Cors-CodePudding

When I run npm start or even pm2 start npm --name "app name" -- start command, my app returns an error like this:

/home/cloud/sites/myapp$ npm start 

> [email protected] start /home/cloud/sites/myapp
> node server.js

internal/modules/cjs/loader.js:818
  throw err;
  ^

Error: Cannot find module 'Cors'
Require stack:
- /home/cloud/sites/myapp/server.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)
    at Function.Module._load (internal/modules/cjs/loader.js:667:27)
    at Module.require (internal/modules/cjs/loader.js:887:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (/home/cloud/sites/myapp/server.js:2:14)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/home/cloud/sites/myapp/server.js' ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `node server.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-05-12T07_31_36_119Z-debug.log

This is my package.json:

{
  "name": "myapp",
  "version": "1.0.0",
  "description": "* TEST\r * Login validation",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node server.js"
  },
  "dependencies": {
    "bcryptjs": "^2.4.3",
    "body-parser": "^1.19.0",
    "cors": "^2.8.5",
    "crypto-random-string": "^3.3.1",
    "express": "^4.17.1",
    "is-empty": "^1.2.0",
    "jsonwebtoken": "^8.5.1",
    "mongoose": "^5.11.17",
    "socket.io": "^4.0.1",
    "validator": "^13.5.2"
  }
}

And my directory tree:

-myapp
 -config
 -node_modules
 -routes
 -utils
 -validation
 -package.json
 -package-lock.json
 -server.js

I've tried deleting package-lock.json and node_modules and then run npm install again, even tried npm install cors, it always installs fine but the error stays the same. Any ideas?

CodePudding user response：

Replace it

const cors = require('Cors')

With this

const cors = require('cors')