Thank you @nephros for the package info + warning.
Indeed, sudoers is now set to allow the user to modify location.conf. But this file only. So it’s not so a big problem, I believe.
The script is now running but not able to enable location.
Even by changing location.conf, the gps seems not to be ON.
In contrary, if I enable it with the GUI Button, then, it is working.
Something in GPS triggering perhaps has changed since the script was made?
As I was saying there, we now have /etc/location/location.conf and /var/lib/location/location.conf which are identical… strange…