The Community Voting Board is no longer listed as a DEBUG item, no longer has a defective thumbnail, and can be placed within the Lot.
Fixed in Patch 1.67.45/ 1.32
If you're still experiencing this issue, please create a new thread.
I see it too. You can work around this by enabling the bb.showhiddenobjects cheat and placing one of the other available boards:
I was able to replicate what you describe but also got @Bluebellflora workaround to work with no problems.
In your case, the way I got it to reproduce was by deleting the community board on one of the other versions of the lot and going back to the community space to exit. Got the incomplete message even though everything there showed green and complete. Saved anyway and then sent a Sim there and the lot was not fully functional. The board was missing some of the options. When I went to leave, I got the incomplete message again but could not edit any of the other lot versions by going to build mode, only the current configuration. I sent the sim home and came back to the community lot in build mode and replaced the sign I had deleted earlier. Sent the sim back in live mode and everything worked as it should
So if any of the lot versions is missing something, the entire lot will give you the incomplete message, not just the version of the lot you are currently seeing. Actually makes sense that it works that way because if any of the versions is missing anything, the lot won't properly.
So, I suggest you take another look at all 4 versions of your community lot build and make sure the requirements are met in all 4 of them. You are probably missing a board in one of them.
Hope this helps.
.png){kind=link}