Fix all redirectors is just something that cleans up redirectors internally. I can’t really think of a situation where doing that would solve any compile errors. It’s great though.
From what I can tell, simply refreshing your blueprints would probably help. You can do this manually for every blueprint listed in that error list, or you can use the RefreshAllNodes plugin at does it for every blueprint simultaneously.
This also fixes any of those “struct not found” errors you get when building.