Thanks for the input. I have copied all the suggested files and folders.
Next I ran into a new problem. Something with libssl. Domoticz is looking for libssl.so.1.0.0 while Debian Buster comes with libssl1.1
On github I read that I need to change the makefile (CMakeList.txt) before make.

I will ...

After years of using Domoticz on the Raspberry, I recently switched to a large piece of metal on which I now, among other things, running a virtualized machine for Domoticz.

I chose Debian 10 as operating system.

I followed the instructions on page: https://www.domoticz.com/wiki/Build_Domoticz ...