Been looking at this for a bit this morning... I'm catching this exception in my BugBag:

2x PersonalBlacklist/Core.lua:397: hooksecurefunc(): UnitPopup_ShowMenu is not a function
[string "=[C]"]: in function `hooksecurefunc'
[string "@PersonalBlacklist/Core.lua"]:397: in main chunk

Locals:

Looking it up, it seems that the hooksecurefunc() had an API change that locked us from hooking into a few things, but I think thats a red herring and really the UnitMenu_ShowPopup was a function and its been removed or hidden.

Pumping this because the addon is still broken, would be incredible if someone could help fix it.

Edit: In the meantime, found a fork updated a couple of days ago by someone (huge ups to them), if anyone else comes by this.
https://github.com/Marechoux/Personal-Black-List-PBL/releases/tag/3.7.8

Hey, the addon has been put on hold due to being flagged by curse (and i think blizzard) for being "discriminatory" somehow. They are currently discussing how to best move forward.

Xylons and I are currently discussing what our path forward is for PBL. Blizzard seems quite unhappy with this specific addon for some reason (and not other similar ones). We'll update you guys as soon as we have a solution.

Their discord has more info about it: https://discord.com/invite/pugCR2Tutr