Version 9.1.6 build error

Bug report

upgraded next.js version from 9.1.4 to 9.1.6 and got a unknown: Unexpected token (7524:8) error. When I reversed to 9.1.4 the error was fixed

Describe the bug

got an error when I ran npm run build on version 9.1.6 of next.js when I reversed the version to 9.1.4 it was resolved. Also got this build error on zeit now

ailed to compile.

unknown: Unexpected token (7524:8)

> Build error occurred
Error: > Build failed because of webpack errors
    at build (/home/alabo/Documents/developers/kushnap/node_modules/next/dist/build/index.js:9:900)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! kushnap@1.0.0 build: `next build`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the kushnap@1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/alabo/.npm/_logs/2019-12-27T23_00_58_197Z-debug.log

To Reproduce

1. Upgrade next.js version to version 9.1.6. (I was on version 9.1.4)
2. Run npm run build which will run next build script
3. See error

Expected behavior

It is meant to build succesfully but it gave this error

Screenshots

System information

• OS: elementary os 5.1
• Version of Next.js: 9.1.6

[anasalpure]

i think you must install webpack then retry to build your project npm install --save-dev webpack

[alabobriggs]

Just incase anyone lands here in the future. The recommended fix provided by @Timer was to adjust the next.config.js as most of the modules there wasn’t being used. The config was trimed from

const withPlugins = require("next-compose-plugins");
const withCSS = require('@zeit/next-css')
const withBabelMinify = require('next-babel-minify')
const withProgressBar = require('next-progressbar')

const nextConfigs = {
    webpack: (config) => {
        // Fixes npm packages that depend on `fs` module
        config.node = {
            fs: "empty"
        };
        config.plugins = [
            ...config.plugins,
        ]
        return config;
    },
    target: 'serverless'
}

module.exports = withPlugins(
    [
        // plugin to import css
        withCSS({}),
        withBabelMinify(),
        withProgressBar({
            progressBar: {
                fancy: true
            }
        })
    ], 
    nextConfigs
);

to

module.exports = {
	experimental: { css: true },
}

NOTE: Experimantal above was added for some css features that are currently in development. Global css files linked in _document.js head was imported in app.js