javascript - Problem with npm start under mac

Question

What is the problem with starting npm start and how to solve it?

Answer 1

The screenshot above shows that there is no permission. sudo npm startTry it

Answer 2

Try deleting node_modules and re-execute npm installTry again

Answer 3

It should be that there is no sudo permission

Answer 4

Just re-execute sudo npm install webpack-dev-server, but in the end webpack failed to compile after execution