So this was the reason the game was full of bugs. I don't know if you have been using cog mods from years ago or just discovered this recently but no modder was able to successfully mod this without any bugs, it took me an entire day and half to find and fix every single bugs which could lead to error. and this is also one of the reason why I don't want to update this anytime soon unless there are some additional content are added, because those bugs will still be there and I will have to fix them again, since what authors mostly fix are the bugs for normal playthrough not the modded one, and the author of this game ADDED many bugs to stop others from modding it.