I visited https://www.geocaching.com/geocache/GC47R1J_gaudineer-knob?guid=8fbaa1a6-dd70-4eaf-b0b0-5836a05dc13c this weekend.
I'm sad to say that this trackable is not in the cache. Perhaps one of the previous finders has grabbed it and not yet logged grabbing it.
Owner may want to reach out to previous finders and issue a gentle reminder to put this guy back in play..
Sorry to be the "bearer" of bad news...