Ok. Error said that:
Pawn Joe has relation "Spouse" with null pawn after loading.
Pawn Martin has relation "Parent" with null pawn after loading.
Find relations for this pawns, you need to find this "null" pawn or ID with not exist pawn.
Pawn Joe has relation "Spouse" with null pawn after loading.
Pawn Martin has relation "Parent" with null pawn after loading.
Find relations for this pawns, you need to find this "null" pawn or ID with not exist pawn.