Next 14 Error: The "target" property is no longer supported in next.config.js

Question

I have just installed a nextjs project with npx create-next-app@latest.

current versions

"next": "14.1.3",
"react": "^18",
"react-dom": "^18",
"sharp": "^0.33.2"

next.config.mjs

/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,
};

export default nextConfig;

My project is running perfectly fine locally in dev and after build.

But while deploying Nextjs Application on AWS S3 bucket with serverless I am getting the following error:

Error: Command failed with exit code 1: node_modules/.bin/next build

> Build error occurred
Error: The "target" property is no longer supported in next.config.js.
See more info here https://nextjs.org/docs/messages/deprecated-target-config

As you can see I don't have any target property on my next.config.mjs file still I am getting this error. I also tried output: "standalone" but got no success.

I can see people facing same error in stack overflow but most of the issue is related to AWS Amplify. I am using AWS S3 bucket with serverless.

Note: I have 3 Nextjs project deployed on AWS S3 with serverless with same configs only difference in this project is I am using Next version 14.1.3 here, rest all is Next version 12.0.8.

I don't know if this will help but here is my serverless.yml file below

NEXT-TEST:
  component: "@sls-next/[email protected]"  
  inputs:
    runtime:
      defaultLambda: "nodejs18.x"
      apiLambda: "nodejs18.x"
      imageLambda: "nodejs18.x"
    memory:
      defaultLambda: 4096
      apiLambda: 4096
      imageLambda: 4096
    timeout:
      defaultLambda: 30
      apiLambda: 30
      imageLambda: 30
  
    bucketRegion: XXXXX
    bucketName: XXXXXX

To deploy I am using below command: npx [email protected]

I have searched and tried many different solution but nothing worked for me.

Please Help!