Now we've caught the rabbit.
The maps have been installed and load when you enter the command changelevel mapname in the console and we can all play. They will also appear in the final vote, but unfortunately there is no picture to be seen.
But I'll leave it that way and let the server process everything.
Oh yes, I added the maps to the "gamemodes_server.txt". In the case of Dust, one picture is now displayed in the vote, the other two not yet.
THANK YOU Barcadi