Port 8084 was already in use.

netstat -ano | findstr 8080
taskkill /pid 109384 /f 

tasklist | findstr “26568”
taskkill /f /im java.exe

taskkill /f /t /im Java.exe

tasklist | find /i "erl"
taskkill /pid 14092 /f 
taskkill /pid 19384 /f