Hi, I'm very embarassed to be another random guy needing help with this issue but even with 2 hours of reading and searching, I couldn't find anything to solve my problem. So when I launch the game in solo it works just fine (even if a bit laggy despite my relatively good computer, but I have a LOT of mods and maps). But when I try to locally host the server with the same mods/maps, it shows "Normal termination" without launching the server. I allocated 16Gb of ram, tried with default and modified sandbox settings and tried to delete the "multiplayer" folder (in User/Me/Zomboid/Saves).
I hope someone will be able to help me, whoever read this, I wish you a good night and hope you'll find my issue.