Laravel 5.4 ‘cross-env’ Is Not Recognized as an Internal or External Command

Question

I\'m trying to run npm run dev for Laravel Mix and I get this error:

> @ dev D:\\projects\\ptcs
> cross-env NODE_ENV=development webpack -         


        

Answer 1

First run:

rm -rf node_modules
rm package-lock.json yarn.lock
npm cache clear --force

Then run the command

npm install cross-env

npm install 

and then you can also run

npm run dev