I cannot setup next.js

[hitt5]

#I did following tutorial. Then command 'npm run dev', error is occurred.
https://github.com/zeit/next.js

Describe the bug

ERROR Failed to compile with 1 errors

error in ./pages?entry

Syntax Error: Unexpected token (6:21)

4 | // };
5 |

6 | export default () =>

Welcome to next.js!

| ^
7 |
@ multi ./pages?entry

Screenshots

System information

• OS: macOS
• Browser (if applies) chrome
• Version of Next.js: 4.2.3

Additional context

------index.js-----------

export default () =>

Welcome to next.js!

------package.json------
{
"name": "kickstart",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "mocha",
"dev": "next",
"build": "next build",
"start": "next start"
},
"author": "",
"license": "ISC",
"dependencies": {
"fs-extra": "^6.0.1",
"ganache-cli": "^6.1.0",
"mocha": "^5.2.0",
"next": "^4.2.3",
"react": "^16.4.0",
"react-dom": "^16.4.0",
"solc": "^0.4.24",
"truffle-hdwallet-provider": "0.0.3",
"web3": "^1.0.0-beta.26"
}
}

[timneutkens]

Looks like you're on a very old version of Next.js, 4.2.3, we're currently at Next.js 6. Let's start by upgrading. But I'm pretty sure that's not the issue.

What I suspect is that you have a .babelrc somewhere in the upwards directory tree. Like in your home directory for example. Next will show a message similar to "using custom .babelrc: <path>".

[hitt5]

@timneutkens Thank you very much for your quick response.
I upgrade Next.js and delete my .babelrc file, it works!!
Really appreciate it.

[timneutkens]

Great 🙌 The only time I saw this happen is with a .babelrc file somewhere 👍