Cannot find module 'webpack-merge'

[greenyourheart]

Case

IS IT A:

• HELP QUESTION

Issue

execute the command with"npm dev run"

Info

• Operating System:WINDOWS
• Node-Version: v12.16.3

$ npm run dev
npm

best-resume-ever@1.0.0 dev C:\Users\xxx\best-resume-ever
node build/dev-server.js

internal/modules/cjs/loader.js:960
throw err;
^

Error: Cannot find module 'webpack-merge'
Require stack:

• C:\Users\xxx\best-resume-ever\config\dev.env.js
• C:\Users\xxx\best-resume-ever\config\index.js
• C:\Users\xxx\best-resume-ever\build\dev-server.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:957:15)
  at Function.Module._load (internal/modules/cjs/loader.js:840:27)
  at Module.require (internal/modules/cjs/loader.js:1019:19)
  at require (internal/modules/cjs/helpers.js:77:18)
  at Object. (C:\Users\xxx\best-resume-ever\config\dev.env.js:1:13)
  at Module._compile (internal/modules/cjs/loader.js:1133:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)
  at Module.load (internal/modules/cjs/loader.js:977:32)
  at Function.Module._load (internal/modules/cjs/loader.js:877:14)
  at Module.require (internal/modules/cjs/loader.js:1019:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
  'C:\Users\xxx\best-resume-ever\config\dev.env.js',
  'C:\Users\xxx\best-resume-ever\config\index.js',
  'C:\Users\xxx\best-resume-ever\build\dev-server.js'
  ]
  }
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! best-resume-ever@1.0.0 dev: node build/dev-server.js
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the best-resume-ever@1.0.0 dev 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! C:\Users\green\AppData\Roaming\npm-cache_logs\2021-01-15T06_54_15_018Z-debug.log

[josearg150]

npm i webpack-merge