oh...I see what that error means now... how obscure.
if you think of the giant world tree where everyone is connected to each other, as a giant jigsaw puzzle, then there will be smaller unconnected groups of pieces of that puzzle that are not yet connected to the main puzzle.
This profile, who has already been linked to Wikipedia as a famous person, has yet to be connected to our larger tree (the big main puzzle body)
In order to "fix" this error -- research must be done in order to find a connection to the tree.