Error: listen EADDRINUSE: address already in use :::6000 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: EADDRINUSE: address already in use :::5000

kill -9 {PID}