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I'm using macOs and even though concurrently is installed globally through npm, when setting it as a start script in package.json and typing npm start the following error occurs.

concurrently - kill-others "npm run server" "npm run client"
sh: concurrently - kill-others: mand not found
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! [email protected] start: `concurrently - kill-others "npm run server" "npm run client"`
npm ERR! spawn ENOENT
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 plete log of this run can be found in:
npm ERR!     /Users/mantzaris/.npm/_logs/2020-04-25T22_40_12_897Z-debug.log

My package.json file :

{
  "name": "thesis_fullstack",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "client": "cd client && npm start",
    "server": "cd server && npm start",
    "start": "concurrently - kill-others \"npm run server\" \"npm run client\""
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "concurrently": "3.5.1"
  }
}

I'm using macOs and even though concurrently is installed globally through npm, when setting it as a start script in package.json and typing npm start the following error occurs.

concurrently - kill-others "npm run server" "npm run client"
sh: concurrently - kill-others: mand not found
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! [email protected] start: `concurrently - kill-others "npm run server" "npm run client"`
npm ERR! spawn ENOENT
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 plete log of this run can be found in:
npm ERR!     /Users/mantzaris/.npm/_logs/2020-04-25T22_40_12_897Z-debug.log

My package.json file :

{
  "name": "thesis_fullstack",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "client": "cd client && npm start",
    "server": "cd server && npm start",
    "start": "concurrently - kill-others \"npm run server\" \"npm run client\""
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "concurrently": "3.5.1"
  }
}

• javascript
• reactjs
• npm
• create-react-app

Share Follow edited Apr 26, 2020 at 13:58 MantzarisVas asked Apr 25, 2020 at 22:59 MantzarisVasMantzarisVas 12333 silver badges99 bronze badges

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4 Answers 4

Sorted by: Reset to default 3

For

Globally - npm install -g concurrently

Locally - npm install concurrently

You need to install the dependency locally in order to use it in any of your start scripts. run

npm install --save concurrently

to install it locally in your project

Your error is not with the package itself, you can either have it globally or save it locally (not --save-dev).

You can find the solution for your problem looking at the error log

concurrently - kill-others "npm run server" "npm run client"
sh: concurrently - kill-others: mand not found

The mand should be either --kill-others or -k for short, here is the official documentation: https://github./kimmobrunfeldt/concurrently

Try this as your package.json

{
  "name": "thesis_fullstack",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "client": "cd client && npm start",
    "server": "cd server && npm start",
    "start": "concurrently --kill-others \"npm run server\" \"npm run client\""
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "concurrently": "3.5.1"
  }
}

Cheers :)

I seriously don't know what I did to fix it. First of all i fixed the mand flag "typo" to concurrently --kill-others your_mands_here. Then i uninstalled node manually and reinstalled it through Homebrew (since I'm using MacOs). After that node and npm wouldn't work at all. Fixed it with: https://stackoverflow./a/54583099/13212764. I think by that point running npm start worked.

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