Yarn start - Command failed with exit code 1 - reactjs

Question

I'm having a little problem while trying to run "Yarn start" in my ReactJS project.
The error is pasted below:
yarn run v1.22.5
$ webpack-dev-server --mode development
The CLI moved into a separate package: webpack-cli
Please install 'webpack-cli' in addition to webpack itself to use the CLI
-> When using npm: npm i -D webpack-cli
-> When using yarn: yarn add -D webpack-cli
internal/modules/cjs/loader.js:883
throw err;
^
Error: Cannot find module 'webpack-cli/bin/config-yargs'
Require stack:
- C:\3AM\web\node_modules\webpack-dev-server\bin\webpack-dev-server.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (C:\3AM\web\node_modules\webpack-dev-server\bin\webpack-dev-server.js:65:1)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'C:\\3AM\\web\\node_modules\\webpack-dev-server\\bin\\webpack-dev-server.js'
]
}
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
I've tried to install webpack-dev-server with npm and yarn, but it didn't solve.

Answer 1

In package.json change the start script to "start": "webpack serve".