Module not found: Error: Can't resolve './locale'

[tduyng]

gatsby develop:

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success write out requires - 0.141s
success write out redirect data - 0.023s
success Build manifest and related icons - 0.005s
success onPostBootstrap - 0.045s
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info bootstrap finished - 8.605 s
warn code block or inline code language not specified in markdown. applying generic code block
success run queries - 3.611s - 28/28 7.75/s
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You can now view gatsby-starter-hero-blog in the browser.
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http://localhost:8000/
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View GraphiQL, an in-browser IDE, to explore your site's data and schema
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http://localhost:8000/___graphql
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Note that the development build is not optimized.
To create a production build, use gatsby build
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warn Module not found: Error: Can't resolve './locale' in
success Building development bundle - 6.646s