If you are seeing a Error like - Error: listen EADDRINUSE: address already in use :::3000 then you can easily kill it by running these commands Find the Process Using Port 3006 : On Windows netstat -ano | findstr :3000 On Linux/macOS lsof -i :3000 Terminate the Process : On Windows taskkill /PID <PID> /F means taskkill /PID 17780 /F On Linux/macOS kill -9 <PID> means kill -9 17780 ==============END ==========