error listen EADDRINUSE: address already in use :::8081. Run CLI with --verbos code example

Example 1: EADDRINUSE: address already in use :::5000

sudo lsof -i :3000

Example 2: Error: listen EADDRINUSE: address already in use :::31641

ps aux | grep node //gets all the nodes and list of PID
kill -9 {PID}