[Samba] Error with "samba-tool ntacl get --as-sddl"

[Miguel Medalha]

On two Samba 4.4.2/4.4.3 member servers, "samba-tool ntacl get 
--as-sddl" gives the following error:

ERROR: Unable to read domain SID from configuration files

Which configuration files is it referring to?

Without "--as-sddl" the command gives a correct output.

It would be nice to get the permissions in sddl format...

The same command works as expected on two AC DCs.