"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "server": "nodemon backend/server.js",
    "client": "npm start --prefix frontend",
    "dev": "concurrently \"npm run server\" \"npm run client\""
  }

here's my scripts for the package.json file that's outside the frontend and backend folders (in the root folder). and when I run the command npm run dev it doesn't work for some reason. note that npm run server and npm run client work prefectly but the issue is when I run the command npm run dev which has the concurrently in it, I don't know what's the issue, is there something I can do to fix this? here's the error message that I get:

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! ecommerce_shop@1.0.0 dev: `concurrently "npm run server" "npm run client"`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the ecommerce_shop@1.0.0 dev 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!     /home/user/.npm/_logs/2021-01-29T18_24_43_756Z-debug.log