Error: listen EADDRINUSE: address already in use :::9090 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 :::9000

step-1 Enter commond to see running ports & processes
ps -ef
step-2 To stop port and processes
sudo kill {PID}

Example 4: EADDRINUSE: address already in use :::5000

kill -9 {PID}