Unable to deploy Next.js project - This site does not seem to be using Next.js

Support
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1

I have created a Next.js project locally and have committed to GitHub. I have also connected my Netlify account to GitHub and tried to deploy the project which fails. I do have the Essential Next.js plugin installed.

Here is my error log which says this site doesn’t seem to be using Next.js which I don’t understand. In my package.json file Next is there…

3:44:31 PM: ❯ Installing plugins
3:44:31 PM:    - @netlify/plugin-nextjs@3.8.0
3:44:51 PM: ​
3:44:51 PM: ❯ Loading plugins
3:44:51 PM:    - @netlify/plugin-nextjs@3.8.0 from Netlify app
3:44:52 PM: ​
3:44:52 PM: ────────────────────────────────────────────────────────────────
3:44:52 PM:   1. onPreBuild command from @netlify/plugin-nextjs             
3:44:52 PM: ────────────────────────────────────────────────────────────────
3:44:52 PM: ​
3:44:52 PM: ​
3:44:52 PM: ────────────────────────────────────────────────────────────────
3:44:52 PM:   Plugin "@netlify/plugin-nextjs" failed                        
3:44:52 PM: ────────────────────────────────────────────────────────────────
3:44:52 PM: ​
3:44:52 PM:   Error message
3:44:52 PM:   Error: This site does not seem to be using Next.js. Please run "npm install next" in the repository.
3:44:52 PM:   If you are using a monorepo, please see the docs on configuring your site: https://ntl.fyi/next-monorepos
3:44:52 PM: ​
3:44:52 PM:   Plugin details
3:44:52 PM:   Package:        @netlify/plugin-nextjs
3:44:52 PM:   Version:        3.8.0
3:44:52 PM:   Repository:     git+https://github.com/netlify/netlify-plugin-nextjs.git
3:44:52 PM:   npm link:       https://www.npmjs.com/package/@netlify/plugin-nextjs
3:44:52 PM:   Report issues:  https://github.com/netlify/netlify-plugin-nextjs/issues
3:44:52 PM: ​
3:44:52 PM:   Error location
3:44:52 PM:   In "onPreBuild" event in "@netlify/plugin-nextjs" from Netlify app
3:44:52 PM:       at validateNextUsage (/.netlify/plugins/node_modules/@netlify/plugin-nextjs/helpers/validateNextUsage.js:15:12)
3:44:52 PM:       at onPreBuild (/.netlify/plugins/node_modules/@netlify/plugin-nextjs/index.js:28:5)
3:44:52 PM: ​
3:44:52 PM:   Resolved config
3:44:52 PM:   build:
3:44:52 PM:     command: npm run build
3:44:52 PM:     commandOrigin: ui
3:44:52 PM:     publish: /opt/build/repo/out
3:44:52 PM:     publishOrigin: ui
3:44:52 PM:   plugins:
3:44:52 PM:     - inputs: {}
3:44:52 PM:       origin: ui
3:44:52 PM:       package: '@netlify/plugin-nextjs'
3:44:52 PM: Caching artifacts
3:44:52 PM: Started saving build plugins
3:44:52 PM: Finished saving build plugins
3:44:52 PM: Started saving pip cache
3:44:52 PM: Finished saving pip cache
3:44:52 PM: Started saving emacs cask dependencies
3:44:52 PM: Finished saving emacs cask dependencies
3:44:52 PM: Started saving maven dependencies
3:44:52 PM: Finished saving maven dependencies
3:44:52 PM: Started saving boot dependencies
3:44:52 PM: Finished saving boot dependencies
3:44:52 PM: Started saving rust rustup cache
3:44:52 PM: Finished saving rust rustup cache
3:44:52 PM: Started saving go dependencies
3:44:52 PM: Finished saving go dependencies
3:44:55 PM: Build failed due to a user error: Build script returned non-zero exit code: 2
3:44:55 PM: Creating deploy upload records
3:44:55 PM: Failing build: Failed to build site
3:44:55 PM: Failed during stage 'building site': Build script returned non-zero exit code: 2
3:44:55 PM: Finished processing build request in 29.572822475s
2

Hi @Crazyhorse

Can you provide the link to your GitHub repository? Others can then help you troubleshoot.

3

Hi there, thanks for your response. What I ended up doing is cloning the Netlify Next.js demo project and just working with that. Deployed it successfully and all good. Except for revalidation. I will open a new question for that though.