When I try to mod the GameConstants class (in 3_Game) I have this message that prevent the server to start :

Can't compile "Game" script module

script/3_Game/constants.c(697) : Circle inheritance in class 'GameConstants@560#1'

create a mod containing a script in 3_Game with:

modded class GameConstants
{

}

Server start and been able to mod modded class GameConstants values