> datachat-web-app@1.0.0 watch /Users/azaidi/datachat/web_app
> webpack --progress --watch --config webpack.config.dev.js

/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js:244
				throw err;
				^

Error: Cannot find module 'friendly-errors-webpack-plugin'
Require stack:
- /Users/azaidi/datachat/web_app/webpack.config.dev.js
- /Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js
- /Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js
- /Users/azaidi/datachat/web_app/node_modules/webpack/bin/webpack.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:623:15)
    at Function.Module._load (internal/modules/cjs/loader.js:527:27)
    at Module.require (internal/modules/cjs/loader.js:681:19)
    at require (/Users/azaidi/datachat/web_app/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
    at Object.<anonymous> (/Users/azaidi/datachat/web_app/webpack.config.dev.js:9:37)
    at Module._compile (/Users/azaidi/datachat/web_app/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:785:10)
    at Module.load (internal/modules/cjs/loader.js:641:32)
    at Function.Module._load (internal/modules/cjs/loader.js:556:12)
    at Module.require (internal/modules/cjs/loader.js:681:19)
    at require (/Users/azaidi/datachat/web_app/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
    at WEBPACK_OPTIONS (/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js:133:13)
    at requireConfig (/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js:135:6)
    at /Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js:142:17
    at Array.forEach (<anonymous>)
    at module.exports (/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js:140:15)
    at /Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js:241:39
    at Object.parse (/Users/azaidi/datachat/web_app/node_modules/webpack-cli/node_modules/yargs/yargs.js:567:18)
    at /Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js:219:8
    at Object.<anonymous> (/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js:538:3)
    at Module._compile (internal/modules/cjs/loader.js:774:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:785:10)
    at Module.load (internal/modules/cjs/loader.js:641:32)
    at Function.Module._load (internal/modules/cjs/loader.js:556:12)
    at Module.require (internal/modules/cjs/loader.js:681:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at Object.<anonymous> (/Users/azaidi/datachat/web_app/node_modules/webpack/bin/webpack.js:155:2)
    at Module._compile (internal/modules/cjs/loader.js:774:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:785:10)
    at Module.load (internal/modules/cjs/loader.js:641:32) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/azaidi/datachat/web_app/webpack.config.dev.js',
    '/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/convert-argv.js',
    '/Users/azaidi/datachat/web_app/node_modules/webpack-cli/bin/cli.js',
    '/Users/azaidi/datachat/web_app/node_modules/webpack/bin/webpack.js'
  ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! datachat-web-app@1.0.0 watch: `webpack --progress --watch --config webpack.config.dev.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the datachat-web-app@1.0.0 watch 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!     /Users/azaidi/.npm/_logs/2019-07-23T16_37_12_766Z-debug.log