mysql: Error while executing group action [solved]

While installing XAMPP for Linux 7.2.13 on Puppy Linux, I received the following errors:

"mysql: Error while executing group action"

"Problem running post-install step. Installation may not compllete correctly
Error running chown -R root:mysql /opt/lampp/var/mysql:
chown: unknow user/group root:mysql"

Seem that Xampp installer cannot create user "mysql" on Puppy Linux. So i create "mysql" user manual, re install XAMPP.
It work for me :).

To create user in Puppy Linux, open Terminal and type:

"adduser mysql"