Uncaught TypeError: Cannot read property 'displayName' of null

I’m getting this error on a fresh install, using React devtools

backend.js:9159 Uncaught TypeError: Cannot read property 'displayName' of null
    at getDisplayName (backend.js:9159)
    at getDataFiber (backend.js:9880)
    at enqueueMount (backend.js:10137)
    at mountFiber (backend.js:10225)
    at backend.js:10285
    at Set.forEach (<anonymous>)
    at Object.walkTree (backend.js:10283)
    at backend.js:8534
    at <anonymous>:52:32
    at Array.map (<anonymous>)

Seems likely it is related to this issue: https://github.com/facebook/react-devtools/issues/1168

This is my current package.json

  "dependencies": {
    "@babel/plugin-proposal-class-properties": "^7.1.0",
    "@fortawesome/fontawesome-free": "^5.4.2",
    "bootstrap": "^4.1.3",
    "get-video-id": "^3.1.0",
    "jquery": "^3.3.1",
    "lodash": "^4.17.11",
    "react": "^16.6.0",
    "react-dom": "^16.6.0",
    "react-toastify": "^4.4.0",
    "reactstrap": "^6.5.0",
    "source-map-support": "^0.5.9",
    "ytdl-core": "^0.26.3"
  },
  "devDependencies": {
    "@babel/preset-react": "^7.0.0",
    "electron": "2.0.7",
    "electron-builder": "^20.28.1",
    "electron-devtools-installer": "^2.2.4",
    "electron-webpack": "^2.1.2",
    "webpack": "^4.16.5"

[Pandawan]

Strange, I am getting this error even with react and react-dom as 16.5.2.

EDIT: I was able to fix this by clearing the electron cache/data. (Go to userData folder, and delete everything).

[mstarski]

EDIT: I was able to fix this by clearing the electron cache/data. (Go to userData folder, and delete everything).

I was able to fix it by deleting just the extensions directory inside userData. It incorrectly claimed an error happened when it was installing the React devtools on the next launch, but it worked on the second launch just fine. Seems to happen every time.

Worked for me, thank you.