Error I faced while setting up reactjs.org locally.

react-local-setup.md

ERROR #85923  GRAPHQL

There was an error in your GraphQL query:

Cannot query field "allExampleCode" on type "Query".

If you don't expect "allExampleCode" to exist on the type "Query" it is most likely a typo.
However, if you expect "allExampleCode" to exist there are a couple of solutions to common problems:

- If you added a new data source and/or changed something inside gatsby-node.js/gatsby-config.js, please try a restart of your development server- The field might be accessible in another subfield, please try your query in GraphiQL and use the GraphiQL explorer to see which fields you can query and what shape they have
- You want to optionally use your field "allExampleCode" and right now it is not used anywhere. Therefore Gatsby can't 
infer the type and add it to the GraphQL schema. A quick fix is to add a least one entry with that field ("dummy content")

It is recommended to explicitly type your GraphQL schema if you want to use optional fields. This way you don't have to add the mentioned "dummy content". Visit our docs to learn how you can define the schema for "Query":
https://www.gatsbyjs.org/docs/schema-customization/#creating-type-definitions

File: src\pages\index.js:362:5

failed extract queries from components - 0.485s
success write out requires - 0.167s
success write out redirect data - 0.019s
success Build manifest and related icons - 0.141s
success onPostBootstrap - 0.173s
⠀
info bootstrap finished - 14.303 s
⠀
warn code block or inline code language not specified in markdown. applying generic code block
warn unable to find prism language 'sh' for highlighting. applying generic code block
warn unable to find prism language 'jsxon' for highlighting. applying generic code block
 ERROR UNHANDLED REJECTION [  '/C:\\Users\\alexy\\Desktop\\best\\reactjs.org\\examples\\es5-syntax-example',  Error: C:\Users\alexy\Desktop\best\reactjs.org\public\page-data\C:\Users\alexy\Desktop\best\reactjs.org\examples\es5-syntax-example contains invalid WIN32 path characters.
      at Object.mkdirs (C:\Users\alexy\Desktop\best\reactjs.org\node_modules\fs-extra\lib\mkdirs\mkdirs.js:18:22)      
      at Object.mkdirs (C:\Users\alexy\Desktop\best\reactjs.org\node_modules\universalify\index.js:5:67)
      at C:\Users\alexy\Desktop\best\reactjs.org\node_modules\fs-extra\lib\output\index.js:20:11
      at C:\Users\alexy\Desktop\best\reactjs.org\node_modules\universalify\index.js:23:46 {
    code: 'EINVAL'
  },
  { elapsed: 23763 }
]



  Error: [
    '/C:\\Users\\alexy\\Desktop\\best\\reactjs.org\\examples\\es5-syntax-example',
    Error: C:\Users\alexy\Desktop\best\reactjs.org\public\page-data\C:\Users\alexy\Desktop\best\reactjs.org\examples\es  5-syntax-example contains invalid WIN32 path characters.
  - mkdirs.js:18 Object.mkdirs
    [reactjs.org]/[fs-extra]/lib/mkdirs/mkdirs.js:18:22

  - index.js:5 Object.mkdirs
    [reactjs.org]/[universalify]/index.js:5:67

  - index.js:20 
    [reactjs.org]/[fs-extra]/lib/output/index.js:20:11


  - code: 'EINVAL'

  - },

  - { elapsed: 23763 }

  - ]

  - index.js:133 process.<anonymous>
    [reactjs.org]/[gatsby-cli]/lib/index.js:133:14

  - index.js:155 processEmit [as emit]
    [reactjs.org]/[signal-exit]/index.js:155:32

  - promises.js:209 processPromiseRejections
    internal/process/promises.js:209:33

  - task_queues.js:98 processTicksAndRejections
    internal/process/task_queues.js:98:32


not finished run queries - 23.865s
not finished Generating image thumbnails - 23.636s

———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————320 pages                                           In Progress                                           react-websiteerror Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.