Error: listen EADDRINUSE: address already in use 0.0.0.0:3001 code example

Example 1: EADDRINUSE: address already in use

sudo lsof -i :
kill -9 

Example 2: 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 3: EADDRINUSE: address already in use :::5000

kill -9 {PID}

Example 4: Error: listen EADDRINUSE: address already in use :::31641

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

Example 5: Error: listen EADDRINUSE: address already in use

Find server pid:
	lsof -i tcp:5000 (the 5000 is the port number)
kill the server:
	kill -9 111119 (the 111119 is the pid)