Problem building blog on Netlify

My site builds and works fine locally but Netlify build from repo fails. Am I doing something wrong?

`7:06:32 PM: success Building CSS — 7.214 s 7:06:49 PM: success Building production JavaScript bundles — 17.286 s 7:06:54 PM: 7:06:54 PM: error Building static HTML for pages failed

See our docs page on debugging HTML builds for help https://goo.gl/yL9lND 7:06:54 PM: 89 | 90 | export default function Blog({data}) {

91 | const { edges: posts } = data.allMarkdownRemark | ^ 92 | return ( 93 | <div> 94 | {/* <BackLinkContainer>

WebpackError: Cannot read property ‘allMarkdownRemark’ of undefined

• index.js:91 Blog src/pages/blog/index.js:91:33

• ReactCompositeComponent.js:306 ReactCompositeComponentWrapper._constructComp onentWithoutOwner ~/react-dom/lib/ReactCompositeComponent.js:306:1

• ReactCompositeComponent.js:282 ReactCompositeComponentWrapper._constructComp onent ~/react-dom/lib/ReactCompositeComponent.js:282:1

• ReactCompositeComponent.js:185 ReactCompositeComponentWrapper.mountComponent ~/react-dom/lib/ReactCompositeComponent.js:185:1

• ReactReconciler.js:43 Object.mountComponent ~/react-dom/lib/ReactReconciler.js:43:1

• ReactMultiChild.js:234 ReactDOMComponent.mountChildren ~/react-dom/lib/ReactMultiChild.js:234:1

• ReactDOMComponent.js:657 ReactDOMComponent._createContentMarkup ~/react-dom/lib/ReactDOMComponent.js:657:1

• ReactDOMComponent.js:524 ReactDOMComponent.mountComponent ~/react-dom/lib/ReactDOMComponent.js:524:1

• ReactReconciler.js:43 Object.mountComponent ~/react-dom/lib/ReactReconciler.js:43:1

• ReactCompositeComponent.js:368 ReactCompositeComponentWrapper.performInitial Mount ~/react-dom/lib/ReactCompositeComponent.js:368:1

7:06:54 PM: Cached NPM modules 7:06:54 PM: Saved Cache Directory 7:06:56 PM: Build complete: exit code: 1 7:06:56 PM: Cleaning up docker container 7:06:57 PM: Error running command: Build script returned non-zero exit code: 1 7:06:57 PM: An error occurred while building the site, skipping the deploy and cache refresh. 7:06:57 PM: Build script returned non-zero exit code: 1 7:07:00 PM: Finished processing build request in 2m20.808351633s`

[casprwang]

Looks similar to my case #2830

[KyleAMathews]

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