Error: listen EADDRINUSE: address already in use :::7000 code example

Example 1: Error: listen EADDRINUSE: address already in use :::3000

sudo lsof -i :3000

Example 2: EADDRINUSE: address already in use :::5000

sudo lsof -i :3000

Example 3: Error: listen EADDRINUSE: address already in use :::31641

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