In my case, there were no blocks per se anywhere directly above the beacon, but blocks one square over had a ladder on them. The light obviously still shone through the empty hole, but no advancements were granted upon completion of the beacon. Not sure if was due to the ladder or the fact that it was below y=0 as I have seen suggested in other threads.
What I did was break the beacon and rebuild the structure much higher up in an open space. Got the advancements, destroyed it again, and rebuilt it yet again where I originally wanted lower down. Took about 5 minutes or so.
handsomep
Affects 1.20.4
In my case, there were no blocks per se anywhere directly above the beacon, but blocks one square over had a ladder on them. The light obviously still shone through the empty hole, but no advancements were granted upon completion of the beacon. Not sure if was due to the ladder or the fact that it was below y=0 as I have seen suggested in other threads.
What I did was break the beacon and rebuild the structure much higher up in an open space. Got the advancements, destroyed it again, and rebuilt it yet again where I originally wanted lower down. Took about 5 minutes or so.