Laravel npm run watch browser sync don't run localhost:3000 - laravel

I have a laravel webpack Browsersync and thats worked on win7. I reinstall my windows and upgraded to win10 and now after i run npm run watch the server http://localhost:3000 keeps 'waiting for server'. So the webpack Browsersync is working but i have no server to check my application. What should be the problem?

you try this:
rm -rf node_modules
rm package-lock.json yarn.lock
npm cache clear --force
npm install

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Tailwind CSS Laravel Mix Error - Forces PostCSS 8 to be installed

I recently created a new laravel 8 project using Breeze for the authentication and tailwind css. All worked perfectly when running npm run watch but once I run npm run prod I ran into errors. I noticed that the Tailwind docs mention that there are PostCSS issues so you need to unistall and run
npm install tailwindcss#npm:#tailwindcss/postcss7-compat #tailwindcss/postcss7-compat postcss#^7 autoprefixer#^9
I done that however every time I run npm run prod now the build quits at 98% and says
Additional dependencies must be installed. This will only take a moment.
Running: npm install postcss#^8.1 --save-dev --legacy-peer-deps
npm WARN browser-sync-webpack-plugin#2.2.2 requires a peer of webpack#^1 || ^2 || ^3 || ^4 but none is installed. You must install peer dependencies yourself.
Finished. Please run Mix again.
This auto updates PostCSS to 8.1 every time.
After that if I run npm run prod again it does the exact same message over and over.
I've tried removing the browsersync plugins and trying again but it still doesn't work.
Anyone ran into this or got a solution?
laravel-mix v6 now supports PostCSS8
According to tailwind docs, it suggests to use npm install tailwindcss#npm:#tailwindcss/postcss7-compat #tailwindcss/postcss7-compat postcss#^7 autoprefixer#^9
With the new Mix v6, run npm install tailwindcss#latest postcss#latest autoprefixer#latest
After this, npm run prod will run the way it should.
you must upgrade laravel mix using the following command
npm install laravel-mix#latest
As Digvijay mentioned above the new Mix v6 now supports PostCSS 8. So run:
npm install tailwindcss#latest postcss#latest autoprefixer#latest
After the when you run npm run prod you will still get this message:
Additional dependencies must be installed. This will only take a moment.
Running: npm install browser-sync browser-sync-webpack-plugin#2.2.2 --save-dev --legacy-peer-deps
npm WARN browser-sync-webpack-plugin#2.2.2 requires a peer of webpack#^1 || ^2 || ^3 || ^4 but none is installed. You must install peer dependencies yourself.
Finished. Please run Mix again.
To fix this just add sudo to the front of the npm command it ran:
sudo npm install browser-sync browser-sync-webpack-plugin#2.2.2 --save-dev --legacy-peer-deps
Now run npm run prod and it should work!

Laravel 8, NPM Wepback API configuration problem, using Yarn on Ubuntu 20.04

Using npm run dev results in the error:
Invalid configuration object. Webpack has been initialized using a configuration object that does not match the API schema. configuration.module.rules[10] has an unknown property 'loaders'
Jetstream Version: 1.6
Jetstream Stack: Livewire
Laravel Version: 8.14
PHP Version: 7.3.0
Database Driver & Version: MySQL v8.0
Steps to reproduce:
Navigate to directory hosting Laravel 8 project
Run command rm -rf node_modules and wait for the command to complete
Run command rm package-lock.json
Run command npm cache clear --force
Run command sudo npm install --global npm - this updates NPM (Node Package Manager)
Run command sudo yarnpkg install
Run command sudo yarnpkg add babel#latest
Run command sudo yarnpkg add webpack#latest
Run command sudo yarnpkg add webpack-cli#latest
Run command sudo yarnpkg add vue-template-compiler --save-dev --production=false
Run command sudo yarnpkg add sass-loader#8.* sass --save-dev --production=false
Run command sudo npm install --global cross-env
Run command yarnpkg run dev
NPM is supposed to return a success message, but clearly something is either broken or misconfigured...
Problem has been solved through either an NPM or Yarn update

NPM run watch resulting in error Laravel 5.7

I am receiving this error when I try to run npm run watch
Error: Cannot find module 'C:\wamp64\www\node_modules\laravel-mix\setup\webpack.config.js'
I am currently using
Laravel Framework 5.7.16
NPM 6.4.1
Thank you in advance
Edit: yes, I have run npm install
You have to first install your node modules with:
npm install
It seems that you don't have the package Laravel-mix, install it running:
npm install laravel-mix --save-dev
Also check if you have your webpack.config.js inside the main folder of your app, if not check for the docs on how to get it: https://laravel-mix.com/docs/3.0/installation

Laravel Mix: These dependencies were not found:

I have a fresh install of Laravel 5.4. I as well have the folowing versions installed on my Windows PC
node: 6.11.0
npm:5.0.3
I have already run npm install, however, when i run npm run watch, i get the following error
> # watch C:\xampp\htdocs\tu
> cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js
10% building modules 1/1 modules 0 active
Webpack is watching the files…
95% emitting
ERROR Failed to compile with 2 errors 12:12:42 AM
These dependencies were not found:
* C:\xampp\htdocs\tu\resources\assets\js\app.js in multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss
* C:\xampp\htdocs\tu\resources\assets\sass\app.scss in multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss
To install them, you can run: npm install --save C:\xampp\htdocs\tu\resources\assets\js\app.js C:\xampp\htdocs\tu\resources\assets\sass\app.scss
I've searched the internet but cant seem to get it working. Any help is appreciated.
I was having the exact same issue but Leo_Kelmendi's solution didn't work for me.
Searching on GitHub, I found there is a bug in NPM 5.2.0 that affects Laravel Mix. Read more about it here.
I had to revert NPM to its previous version in order to get my assets compiling again:
$ sudo npm install -g npm#5.1.0
Then, I removed all installed modules:
$ rm -rf node_modules/
$ npm cache clear --force
$ rm -rf package-lock.json
Notice that clearing the cache may take a while.
And, finally, I reinstalled node deps and run the dev script:
$ npm install
$ npm run dev
Try to revert to this package.json. You can find it here:
https://github.com/laravel/laravel/blob/c1643bf0c59b6864fc55e09cce3bfafc67d29e2a/package.json
And try to run it again, also make sure, there's a node_modules/moment folder.

Npm install fails on heroku: error phantomjs#1.9.7-5 install: `node install.js

npm install works when run on my local machine and on codeship.io, but fails on heroku.
This seems to be an issue with the phantom npm package. It has happened on two separate projects simultaneously. Both works locally, on codeship and on my deployment server, but wont run on heroku.
Founder of Codeship here.
Have you tried setting the phantom npm package as a development dependency so it doesn't get installed on Heroku?

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