mysql.server does not have such a file or directory

sudo /opt/lampp/lampp start
Starting XAMPP for Linux 7.3.8-2...
XAMPP: Starting Apache...already running.
XAMPP: Starting MySQL.../opt/lampp/lampp: line 163: /opt/lampp/bin/mysql.server: No such file or directory
ok.
XAMPP: Starting ProFTPD...already running.

I could not start MySQL. Please tell me what it's about.