Here's some real footage on the job showing exactly what we're talking about on a 787 nose gear. Watch how the downlock pin goes in the right spot, and check that plugged hole next to it from the AD..
Boeing had already flagged this and issued a Service Bulletin to install a plug/cover in the wrong hole. FAA made it mandatory with AD 2019-23-07. Newer jets like the Lufthansa one should have had that plug from the factory. Not sure exactly how the pin ended up in the wrong place or if it wasn't Installed/seated right during the gear cycle check...