TypeError: Cannot read property 'componentChunkName' of undefined

[AAverin]

Description

After implementing some generated pages (blog posts) often dev version of Gatsby breaks with TypeError: Cannot read property 'componentChunkName' of undefined

Only restarting gatsby develop solves the problem

Steps to reproduce

Not sure what was the cause and how to cleanly reproduce it. I assume that generating pages using createPages, onCreateNode and onCreatePages might be the cause of the problem.

Environment

System:
OS: macOS High Sierra 10.13.6
CPU: x64 Intel(R) Core(TM) i7-7920HQ CPU @ 3.10GHz
Shell: 5.3 - /bin/zsh
Binaries:
Node: 10.10.0 - /usr/local/bin/node
npm: 6.4.1 - /usr/local/bin/npm
Browsers:
Chrome: 73.0.3683.86
Safari: 11.1.2
npmGlobalPackages:
gatsby-cli: 2.4.4

[AAverin]

After starting gatsby develop everything works for a while, but then randomly breaks and page no longer opens

[dbrookes]

I have the same issue on hot reload, any chance you're using gatsby-plugin-remove-trailing-slashes?

Removing gatsby-plugin-remove-trailing-slashes from gataby-config.js brings back hot reloading in dev for me

[AAverin]

I have this, maybe some of the plugins use remove-trailing-slashes internally?

module.exports = {
  siteMetadata: {
    title: `Gatsby Default Starter`,
  },
  plugins: [
    {
      resolve: `gatsby-plugin-google-analytics`,
      options: {
        // Setting this parameter is optional
        anonymize: true,
      },
    },
    {
      resolve: `gatsby-plugin-react-helmet`
    },
    {
      resolve: 'gatsby-transformer-remark',
      options: {
        plugins: [
          {
            resolve: 'gatsby-remark-images',
            options: {
              maxWidth: 970,
            },
          },
          {
            resolve: "markdown-embed-youtube"
          }
        ],
      },
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        path: `${__dirname}/src/pages/blog/posts`,
        name: "pages",
      },
    },
    {
      resolve: `gatsby-plugin-facebook-pixel`,
      options: {

      },
    },
    `gatsby-remark-copy-linked-files`,
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-remark-images`,
      options: {
        maxWidth: 1080,
      },
    }
  ],
}

[sarahannnicholson]

I am seeing this as well, I haven't tried installing remove-trailing-slashes yet.

But I have a question for everyone. When you do gatsby build then gatsby serve and go to http://localhost:9000 do you get the same error? Just wondering if what I am seeing with gatsby serve is related to this

[AAverin]

I am still struggling to build, get some error inside error message prettifier similar to #6668
Will post a message when I build the project
Also, maybe look to #4360. Once I applied a fix from there I think I stopped getting the componentChunkName message

[khades]

that issue was fixed in recent 2.2.4 gatsby build, try to update gatsby itself, not cli

[sidharthachatterjee]

@sarahannnicholson This shouldn't occur when running gatsby build then gatsby serve since the error looks like it's coming from the Dev 404 code, which isn't included in the production build

@AAverin Can you link to a minimal reproduction of this if possible?

[khades]

#12671 this pull fixes pages deletion (even 404) in development mode, its live in version 2.2.4

[sidharthachatterjee]

Thank you @khades

@AAverin Can you confirm if updating to 2.2.4 fixes your issue?

[AAverin]

I'll update and keep testing, thanks

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