message: Update package.json
  revert react and react-scripts versions to 3.* and 16.*
diff: "dependencies": {
  "bootstrap": "4.5.3",
  "classnames": "2.2.6",
  - "react": "17.0.1",
  - "react-dom": "17.0.1",
  + "react": "16.14.0",
  + "react-dom": "16.14.0",
  "react-router-dom": "5.2.0",
  - "react-scripts": "4.0.0",
  + "react-scripts": "3.4.4",
  "fs-extra": "9.0.1"
  },
  "eslintConfig": {
  