I'm not entirely sure if this is an issue with the mod's handling of file paths or my misunderstanding on how to format the path properly, but I'm unable to select the abc_server folder in my server hosted by Host Havoc, as trying to use relative file pathing in the .json file isn't getting me anywhere.
I believe Host Havoc uses Linux for it's OS, but I can't get the root folder figured out to try and path up from it. So instead I tried to use relative pathing from the mod or modconfig folders to get the parent folder, since both share the same parent folder.