wifi – How to continue sharing the network after rebooting?

I have enabled network sharing from Ethernet to Wifi in an iMac with Mojave.

This computer is used by our employees and is restarted daily. After the reboot, I have to open System Preferences and disable / re-enable Internet sharing to be active again.

How can I keep it sharing after restarting the computer?

This used to work in 10.12, but I cleaned and reinstalled 10.14 now this happens.