listen EADDRINUSE: address already in use 0.0.0.0:8100 code example

Example 1: 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 2: error: listen eaddrinuse: address already in use 0.0.0.0:5555

killall -9 node