Lesson 1-setting-up npm start error

[5SMNOONMS5]

After run npm start , it appear this error ....

[Andersos]

There are missing some lines from the error message. What is above the picture you attached?
It might be that you are missing a dependency so you want to npm install whatever dependency you are missing.

[5SMNOONMS5]

sorry for late response , this is complete error page

[Andersos]

So this error message "EADDRINUSE" means that something is already running on port 8080.

You can either change the port to another address or you can try and kill whatever is already running.

You can kill it by doing:
lsof -i :8080

Then when you have the pid run:
kill -9 <PID>

[5SMNOONMS5]

@Andersos thx very much .. it now work for me !! ^^