Lesson 11: npm run build gives an error

[digitael]

I had the same error in my own version, so I downloaded the files from lesson 11 fresh off of GitHub. Both return the same error when trying to build the app:

$ npm run build

dojo-helpdesk@0.1.0 build next build

• info Creating an optimized production build
• info Compiled successfully
• info Linting and checking validity of types
• info Collecting page data ...TypeError: fetch failed at node:internal/deps/undici/undici:12618:11 at process.processTicksAndRejections (node:internal/process/task_queues:95:5) { cause: AggregateError [ECONNREFUSED]: at internalConnectMultiple (node:net:1116:18) at afterConnectMultiple (node:net:1683:7) at TCPConnectWrap.callbackTrampoline (node:internal/async_hooks:130:17) { code: 'ECONNREFUSED', [errors]: [ [Error], [Error] ] } }

Build error occurred Error: Failed to collect page data for /tickets/[id] at C:\Users\chris\Documents\GitHub\Netninja-Next13-Masterclass\nextjs-masterclass-lesson-11\node_modules\next\dist\build\utils.js:1158:15 at process.processTicksAndRejections (node:internal/process/task_queues:95:5) { type: 'Error' }

[vitamins999]

I had the same problem and managed to solve it. Turns out JSON Server needs to be running when you build, otherwise Next can't fetch from the end point (because it isn't there).