Gatsby: Gatsby Transformer Remark Error: Type with name "MarkdownExcerptFormats" does not exists

[joelopresti]

Description

Trying to follow the basic Gatsby markdown guide, but I get Error: Type with name "MarkdownExcerptFormats" does not exists when I run gatsby develop in my environment

Steps to reproduce

1. Set up a working instance of Gatsby pulling from the WordPress API, creating posts, pages and paginated results for the main posts page.
2. Follow https://www.gatsbyjs.org/docs/adding-markdown-pages/ to add markdown, but add the query directly into the main query within gatsby-node.js.
3. Run gatsby develop

Expected result

I expect that the markdown files render into HTML

Actual result

```error UNHANDLED REJECTION

Error: Type with name "MarkdownExcerptFormats" does not exists```

Environment

Run gatsby info --clipboard in your project directory and paste the output here.

System:
OS: Windows 10
CPU: (8) x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Binaries:
npm: 6.4.1 - C:\Program Files\nodejs\npm.CMD
Languages:
Python: 2.7.15 - /c/Python27/python
Browsers:
Edge: 42.17134.1.0
npmPackages:
gatsby: ^2.10.0 => 2.10.0
gatsby-image: ^2.2.3 => 2.2.3
gatsby-paginate: ^1.1.0 => 1.1.0
gatsby-plugin-favicon: ^3.1.6 => 3.1.6
gatsby-plugin-manifest: ^2.2.0 => 2.2.0
gatsby-plugin-offline: ^2.2.0 => 2.2.0
gatsby-plugin-react-helmet: ^3.1.0 => 3.1.0
gatsby-plugin-sharp: ^2.2.1 => 2.2.1
gatsby-source-filesystem: ^2.1.5 => 2.1.5
gatsby-source-wordpress: ^3.1.3 => 3.1.3
gatsby-transformer-remark: ^2.6.6 => 2.6.6
gatsby-transformer-sharp: ^2.2.0 => 2.2.0

[joelopresti]

I can confirm that I can get the markdown rendering properly with a clean version of Gatsby.

[stefanprobst]

Yes, the latest gatsby-transformer-remark has a peer dependency on gatsby v2.12 and above, so updating the gatsby package should fix this.

[joelopresti]

I can confirm that updating to the latest version of gatsby has resolved this error. Thank you @stefanprobst.

[joelopresti]

Hi Kien,

I just did npm update gatsby

I hope that helps.

On Wed, Jul 17, 2019 at 10:51 AM Kien Dang [e-mail] wrote:

@fendermaniac https://github.com/fendermaniac, I have a stupid question
but how do I update to the latest version of gatsby?

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[kxdang]

Thank you very much @fendermaniac !