User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-27040518-20201218051313/@comment-27040518-20201221040051

Edit: I spent hours trying to figure out why the script doesn't work (for me). Found out the cause, had to remove the outdated "MessageWallGreeting" script from my site's ImportJS page and now the new WikiActivity page finally works.