Issue: Deploying Turborepo Monorepo with Next.js 15 to AWS Amplify

[ahtisham-gsoftconsulting]

How did you install the Amplify CLI?

i use Amplify console not cli

If applicable, what version of Node.js are you using?

22 and nextjs 15.1.5

Amplify CLI Version

not confirmed

What operating system are you using?

Default

Did you make any manual changes to the cloud resources managed by Amplify? Please describe the changes made.

I’m currently working on deploying a Turborepo-based monorepo to AWS Amplify, and I’m running into some issues. My setup includes Next.js 15 in the monorepo structure, and the Amplify build successful generated but when i click on link fails with 500 error Here are the key issues I’m facing: logs list in cloud watch node:internal/modules/cjs/loader:1228 2025-01-20T10:10:05.164Z Error: Cannot find module ‘next/dist/server/lib/start-server.js’ here is build settings file node version 22 version: 1 applications:

version: 1
applications:

frontend:
phases:
preBuild:
commands:
nvm use 22
yarn install
build:
commands:
yarn run build --filter=omnipulse
artifacts:
baseDirectory: apps/appname/.next
files:
'/'
cache:
paths:
node_modules//

.next/cache/
/*
apps/appname/node_modules//*
apps/appname/.next/cache/
/*
buildPath: /
appRoot: apps/appname

Describe the bug

I’m currently working on deploying a Turborepo-based monorepo to AWS Amplify, and I’m running into some issues. My setup includes Next.js 15 in the monorepo structure, and the Amplify build successful generated but when i click on link fails with 500 error Here are the key issues I’m facing: logs list in cloud watch node:internal/modules/cjs/loader:1228 2025-01-20T10:10:05.164Z Error: Cannot find module ‘next/dist/server/lib/start-server.js’ here is build settings file node version 22 version: 1 applications:

version: 1
applications:

frontend:
phases:
preBuild:
commands:
nvm use 22
yarn install
build:
commands:
yarn run build --filter=omnipulse
artifacts:
baseDirectory: apps/appname/.next
files:
'/'
cache:
paths:
node_modules//

.next/cache/
/*
apps/appname/node_modules//*
apps/appname/.next/cache/
/*
buildPath: /
appRoot: apps/appname

Expected behavior

Should able to run

Reproduction steps

click here and check faild with 500

https://omnipulse-develop.d3hg6hq52rj16l.amplifyapp.com/

Project Identifier

Log output

no

Additional information

No response

Before submitting, please confirm:

• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.
• I have removed any sensitive information from my code snippets and submission.

[ykethan]

Transferring this issue as this appears to be related to Amplify console build.

[Jay2113]

Hi @ahtisham-gsoftconsulting 👋 , thanks for reaching out. Can you verify a couple of things:

1. Did you observe any errors locally? You can run a production build via npm run build and then open the link on localhost.
2. What Node version are you using locally? It's possible that the application may be using a different Node version and fails to run on Node 22. You can adjust the Node version at build time via nvm use 20 and it will translate to the compute runtime.

[ahtisham-gsoftconsulting]

hi @Jay2113 local build working fine i try with node 20 also for amplify build but same issue . this issue occur in nextjs 15 . when i downgraded to 14 app working fine

[lengieng]

I'm having the same issue. My setup is:

• Monorepo using npm workspace
• Next.js 15.0.3
• Tried both Node v18.20.4 and 20.18.2

Build and deploy completed successfully, but I got HTTP ERROR 500 when opening the deployed URL.

Hosting compute logs are exactly the same as OP's.

[Jay2113]

@ahtisham-gsoftconsulting @lengieng Can you share an example repo which I could use to reproduce this issue? I setup a couple of Next 15 apps with npm workspaces and turborepo but didn't run into this error Error: Cannot find module ‘next/dist/server/lib/start-server.js’.

[lengieng]

@Jay2113 I finally resolved the Next.js hosting issue on my end. It was related to the different Next.js versions in my frontend apps. I had one using Next.js 14 and the others using Next.js 15.

It looked like NPM Workspace had a hard time keeping track of various React versions. I even tried various npm --install-strategy options without success.

I ended up upgrading all the frontend to the same Next.js 15 version, and it fixed the frontend hosting issue.

I'm still having an issue getting the Amplify Gen 2 backend in this monorepo to build in the Amplify console though. Sandbox is working fine locally. In this case, I think the problem I'm facing now isn't related to this opened issue anymore.

I will leave it to the OP to provide the reproducible repo since he is still having the Next.js issue. :)