There is a system explicitly designed not to always give the victory to the popular vote winner. If, on occasion, it does what is was explicitly designed to do that isn't really an error.

"Haha, we have 50.5% of the vote now you have to do what we say" is workable but hardly a stronger moral position than securing 49.5% - particularly after looking at the turnout situation in the US. Philosophically if there is less than overwhelming majorities (talking 60%, 70% style figures) there is a lot of room to question whether a democratic consensus has been achieved.