Ask questionsWebpack error #98123 when running "gatsby develop"

<!-- Please fill out each section below, otherwise your issue will be closed. This info allows Gatsby maintainers to diagnose (and fix!) your issue as quickly as possible.

Useful Links:

  • Documentation:
  • How to File an Issue:

Before opening a new issue, please search existing issues: -->


gatsby develop doesn't work because of an error #98123 from Webpack.

Steps to reproduce

  1. Clone my repo
  2. cd into that repo
  3. Run npm install
  4. Run gatsby develop

Expected result

Development server should start

Actual result

I get this output:

Generating SSR bundle failed
[BABEL] /home/fw33n/ateliers-chartreux/.cache/develop-static-entry.js: Cannot find module '@babel/helper-create-class-features-plugin' (While processing: "/home/fw33n/ateliers-chartreux/node_modules/@babel/plugin-proposal-class-properties/lib/index.js")
File: .cache/develop-static-entry.js
⠼ start webpack server


gatsby info --clipboard (I'm running Ubuntu in WSL):

  OS: Linux 4.4 Ubuntu 18.04.2 LTS (Bionic Beaver)
  CPU: (8) x64 Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
  Shell: 4.4.19 - /bin/bash
  Node: 10.16.3 - ~/.nvm/versions/node/v10.16.3/bin/node
  npm: 6.11.3 - ~/.nvm/versions/node/v10.16.3/bin/npm
  Python: 2.7.15+ - /usr/bin/python
  gatsby: ^2.15.9 => 2.15.9
  gatsby-plugin-sass: ^2.1.13 => 2.1.13
  gatsby-source-contentful: ^2.1.33 => 2.1.33
  gatsby-cli: 2.7.47

Additionnally, my package.json:

  "name": "ateliers-chartreux",
  "private": true,
  "description": "Le site des Ateliers Chartreux",
  "version": "0.1.0",
  "license": "MIT",
  "scripts": {
    "build": "gatsby build",
    "develop": "gatsby develop",
    "format": "prettier --write \"**/*.{js,jsx,json,md}\"",
    "start": "npm run develop",
    "serve": "gatsby serve",
    "test": "echo \"Write tests! -> \""
  "dependencies": {
    "gatsby": "^2.15.9",
    "gatsby-plugin-sass": "^2.1.13",
    "gatsby-source-contentful": "^2.1.33",
    "node-sass": "^4.12.0",
    "react": "^16.9.0",
    "react-dom": "^16.9.0"
  "devDependencies": {
    "prettier": "^1.18.2"
  "repository": {
    "type": "git",
    "url": ""
  "bugs": {
    "url": ""


Answer questions prydda

npm run develop will get you up & running for now.


Related questions

Error: Cannot create as TypeComposer the following value: Date. hot 3
Importing Link from gatsby breaks Storybook hot 2
Loading chunks while a new release is deployed hot 2
gatsby build error #11328 A page component must export a React component for it to be valid. Please make sure this file exports a React component: /Users/tiagosanchez/Documents/Projects/personalBlog/node_modules/gatsby-plugin-offline/app-shell.js hot 2
[gatsby-telemetry] error: src/postinstall.js not found in Linux environments hot 2
IE11: Object not valid as React Child hot 2
CircleCI build Error: spawn ENOMEM hot 2
[Help] I somehow managed to butcher my site's performance hot 2
Build gets stuck at Generating image thumbnails / Update schema on large sites hot 2
[gatsby-source-graphql] Shopify GraphQL Schema Error hot 2
UNHANDLED REJECTION Source and destination must not be the same. hot 2
gatsby-source-shopify unable to complete build hot 2
Gatsby's Use Of Polyfills and the 'Missing Resources for x' error hot 2
Autoprefixer "browsers" option is deprecated in v9, produces warnings hot 2
&#39;gatsby&#39; is not recognized as an internal or external command hot 2
Github User Rank List