listen EADDRINUSE: address already in use 127.0.0.1:8888 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

sudo lsof -i :<PORT>
kill -9 <PID>