Oil leak front engine cover (not oil sensor)

Doing my oil change today I noticed a leak that was coming from above where the oil pressure sensor is. I know the oil pressure sensor is a common leak and was already planning to replace it, but this seems to be coming from higher up on the front cover. It went all the way down to the oil filter housing / oil pan. It looks to be coming from that brown block off plate next to the exhaust manifold. For now I just cleaned everything with brake clean and I'll check again at my next oil change, unless I notice it on the floor of the garage first.

Anyone dealt with this before?