Why am I getting this error in husky (in react)?

Question

I'm not good at English. I beg your pardon.

I wanted to apply 'prettier' before commit using husky & lint-staged.

So I installed 'husky@4', 'lint-staged', 'prettier'.

and my package.json is

{
  "name": "42bob",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.4",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "node-sass": "^5.0.0",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-router-dom": "^5.2.0",
    "react-scripts": "4.0.3",
    "web-vitals": "^1.0.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "devDependencies": {
    "husky": "^4.3.8",
    "lint-staged": "^11.1.2",
    "prettier": "^2.3.2"
  },
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged"
    }
  },
  "lint-staged": {
    "src/**/*.{js,jsx,json,tsx}": [
      "prettier --write",
      "git add"
    ]
  }
}

However, when I commit, I get the following error:

'node' is not recognized as an internal or external command operable program or batch file

I already set environment variables and rebooted.

If I type 'node' in the cmd, node is running fine.

but why is that error popping up?