Broken when upgrading to Nuxt 2

[simonwjackson]

❯ npm run dev

> nuxt-blog-module-example@1.0.0 dev /Users/simonwjackson/storage/code/sandbox/nuxt-blog-module-example
> nuxt

   blog:api Listening on /api/blog                                                                                                                                                17:05:11

 ERROR  Cannot destructure property createHash of 'undefined' or 'null'.                                                                                                        17:05:13

  at Object.<anonymous> (node_modules/extract-css-chunks-webpack-plugin/dist/index.js:27:5)
  at Module._compile (internal/modules/cjs/loader.js:689:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
  at Module.load (internal/modules/cjs/loader.js:599:32)
  at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
  at Function.Module._load (internal/modules/cjs/loader.js:530:3)
  at Module.require (internal/modules/cjs/loader.js:637:17)
  at require (internal/modules/cjs/helpers.js:20:18)
  at Object.<anonymous> (node_modules/extract-css-chunks-webpack-plugin/dist/cjs.js:3:18)
  at Module._compile (internal/modules/cjs/loader.js:689:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
  at Module.load (internal/modules/cjs/loader.js:599:32)
  at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
  at Function.Module._load (internal/modules/cjs/loader.js:530:3)
  at Module.require (internal/modules/cjs/loader.js:637:17)
  at require (internal/modules/cjs/helpers.js:20:18)

[nikkanetiya]

Thanks @simonwjackson for mention. I will try it out today.