'alpha' is not exported from '@mui/system'

Question

Please i'm getting this error from @mui/material library, I have checked the package.json of the mui/system and it has alpha exported in it.

./node_modules/@mui/material/styles/index.js
 Attempted import error: 'alpha' is not exported from '@mui/system'.

Here's the package.json of the application

"dependencies": {
    "@date-io/date-fns": "1.x",
    "@emotion/react": "11.7.0",
    "@emotion/styled": "11.6.0",
    "@material-ui/core": "4.12.3",
    "@material-ui/icons": "4.11.2",
    "@mui/icons-material": "5.2.0",
    "@mui/material": "^5.2.7",
    "@mui/styled-engine-sc": "5.1.0",
    "@mui/styles": "5.2.2",
    "@mui/system": "^5.2.6",
    "@reduxjs/toolkit": "1.6.2",
    "@testing-library/jest-dom": "5.11.4",
    "@testing-library/react": "11.1.0",
    "@testing-library/user-event": "12.1.10",
    "date-fns": "2.27.0",
    "express": "4.17.1",
    "react": "17.0.2",
    "react-bootstrap": "2.0.2",
    "react-bootstrap-icons": "1.6.1",
    "react-circular-gradient-progress": "1.1.1",
    "react-circular-progressbar": "2.0.4",
    "react-dom": "17.0.2",
    "react-icons": "4.3.1",
    "react-organizational-chart": "2.1.0",
    "react-redux": "7.2.6",
    "react-router-dom": "5.2.0",
    "react-scripts": "4.0.3",
    "react-spring": "9.3.1",
    "styled-components": "5.3.3",
    "web-vitals": "1.0.1"
  },

My node version is v12.22.8

Answer 1

I think the problem is that you have mixed Material UI version 4 and 5 libraries and they are incompatible with each other. Try replacing @material-ui/core with @mui/core and just remove @material-ui/icons import as you already have @mui/icons-material and use the latest versions of all @mui/* imports.

Clear node_modules before installing dependencies again, to make sure everything is in order and old dependency versions are removed.

EDIT: what turned out to be necessary to solve it in the end - install node v12.22.7, remove node_modules, clean yarn cache and reinstall dependencies