iv beaten all the main missions and am in the process of finding all the hidden packages
so yesterday i was doing so when i noticed there was a hollowed out red square on my map
when i go to the pause menu the map key says the hollowed out red square is "Player Target"
but when i go to the spot (in portland close to police station) there is nothing there, it seems as if it is half on a rooftop, half on a sidewalk
i have no idea what it is for or what i need to do