Your plugins must export known APIs from their gatsby-node.js.
The following exports aren't APIs. Perhaps you made a typo or
your plugin is outdated?
See https://www.gatsbyjs.org/docs/node-apis/ for the list of Gatsby Node APIs
— The plugin "gatsby-plugin-eslint@1.0.3" is exporting a variable named "modifyWebpackConfig" which isn't an API. Perhaps you meant to export "onCreateWebpackConfig"?
error An unexpected error occurred: "Command failed.
Exit code: 1
Command: sh
Arguments: -c gatsby build
environment: