basically if I npm start for the first time it works fine.
after that it doesn't work and show that message unless I
netstat -ano | findstr :3000
tskill typeyourPIDhere
I tried many solutions but nothing worked
the issue I have started when I used npm run build, am I missing something or did something corrupt and not show or what happened?
The server process isn't shutting down properly and the port remains open. There's many reasons this can happen.