The modding API appears broken, enabling only that comes up with this error message:
Error Could not load mod one of the scripts games
/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/helpers/checks.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/api/persistence.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/api/events.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/api/platforms.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/api/topics.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/api/research.js,games/SteamLibrary/SteamApps/common/Game Dev Tycoon/mods/gdt-modAPI/examples/examples.js is missing or invalid!
Enabled Mods:
Game Dev Tycoon Mod API by support@greenheartgames.comGame Version: 1.5.10
Platform: Linux
Distribution: Steam