There are other threads of this issue e.g. https://us.forums.blizzard.com/en/wow/t/find-the-foreman-impossible-to-progress/1925404/13 and Find the foreman BUGGED, CANNOT PROCEDE MAIN STORY - #4 by Syrkxion-silvermoon
My GM response was that the devs were aware and fixing it, but no information on an ETA - that was yesterday.