we can only guess just as you. the devs have however stated
so its worth a try to complete the prologue and see if that solves it. as for how that can happend the answer is simply that with enough long lines of codes there will be errors that the programmer have no idea how they have occured or why they are tied. (you have mayby heard stories about random things being placed out of bounds in games that has no reason to exist other than that the code for some reason dont work when you remove it)