Error: Another web server is already running
Error:
root@ip-112-21-1-80:/opt/lampp# sudo /opt/lampp/lampp stop
Stopping XAMPP for Linux 8.2.4-0…
XAMPP: Stopping Apache…not running.
XAMPP: Stopping MySQL…ok.
XAMPP: Stopping ProFTPD…ok.
Solution:
sudo netstat -nap | grep :80