Install npm for all the dependencies you need, for that you need to be in the root folder of that project.
you can see that original source and the compressed folder path.
If you want to debug and run that stuff in development mode run this
npm run dev
else you can run
npm run production
There is also a third method when you are currently working on a design and want to refresh it everytime, then you can run:
npm run watch
public/image/logo/logo.png you can change the project logo. It used in the E-Mail Templates.
If you want some help, check the Laravel Compiling Assets (Mix)
Hopefully you are good to go with that.