im gonna guess youre on windows, in that case, you can download the windows server zip to wherever, right click in file explorer while in its folder, choose ‘open with command prompt/powershell’, then type in “gunnorun_server.exe”, and if you wanna say, increase the player count to 16 and make the world always be CaveShort, youd type in “gunnorun_server.exe peers=16 world=CaveShort”
I've this error when i try to open a server