Build command exited with code: 1

[licorice]

I’m trying to deploy Next.js in Cloudflare Pages through Github, but I’m getting this error, while I followed the steps from the Cloudflare GUI. What am I doing wrong?

00:43:08.964	Executing user command: npx @cloudflare/next-on-pages --experimental-minify
00:43:16.202	/opt/buildhome/.npm/_npx/1136/lib/node_modules/@cloudflare/next-on-pages/dist/index.js:3771
00:43:16.202	value = parts[1] ?? null;
00:43:16.202	^
00:43:16.202
00:43:16.202	SyntaxError: Unexpected token ‘?’
00:43:16.203	at wrapSafe (internal/modules/cjs/loader.js:1054:16)
00:43:16.203	at Module._compile (internal/modules/cjs/loader.js:1102:27)
00:43:16.203	at Object.Module._extensions…js (internal/modules/cjs/loader.js:1158:10)
00:43:16.203	at Module.load (internal/modules/cjs/loader.js:986:32)
00:43:16.203	at Function.Module._load (internal/modules/cjs/loader.js:879:14)
00:43:16.203	at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
00:43:16.203	at internal/main/run_main_module.js:17:47
00:43:16.355	Failed: build command exited with code: 1
00:43:17.132	Failed: error occurred while running build command

[cherryjimbo]

?? is newer syntax that the default Node.js version in the Pages build image doesn’t support (it uses Node.js 12 today).

You can fix this by setting a NODE_VERSION env var to something modern like 18. There are also other things you will need to set for next-on-pages - be sure to follow the instructions at GitHub - cloudflare/next-on-pages: CLI to build and develop Next.js apps for Cloudflare Pages.

[licorice]

Thanks for your fast reply! How and where I do this?

[cherryjimbo]

Run through the instructions in the next-on-pages repo and it should guide you through this:

GitHub - cloudflare/next-on-pages: CLI to build and develop Next.js apps for... - 3. Deploy your application to Cloudflare Pages

[licorice]

Thanks @cherryjimbo

Just for more details if it can help someone, I just added in the settings > Environment variables for both production and preview: NODE_VERSION : 18.