When reading any story, there’s bound to be a plot hole we encounter or fall into…no one is perfect. Not every loose end will find its tie; it’s a matter of picking and choosing which ones to leave.
Some plot holes could be used later on in the series…even if it was just an accident. While editing your manuscript, if the plot is disturbed greatly by the error, fix it. Does it ruin one sub-plot? Revisit. If it can be manipulated later on, maybe it’s not really an issue at all.
Listen to your beta-readers, your editors…If it proves to be a serious problem, you’re not going to have that groundbreaking novel you had hoped for.