I think if anyone is to blame for that goal, it's Gibson, Normann or Dowell.I also thought Aarons was upfield for their goal, but having watched the highlights he was actually pulled to the left post, leaving our right totally open.
Gibson is marking space in front of Mbeumo, rather than being goalside of him. So Omobamidele goes over to mark Mbeumo. That leaves Toney free on the penalty spot, so Aarons picks him up. That leaves Henry in acres of space to score.
Either Gibson should have been goal side of Mbeumo so Omobamidele doesn't go over, Normann should have dropped back to mark Toney, or Dowell should have been tracking Henry.
