Last Edge Parity Error
With almost all the edges solved, there are only 4 pieces out of place:
Dd
R
F’
U
R’
F
Dd’
Adjacent Edges Flipped
With the cube almost completely solved, there are two adjacent edges that are “flipped”.
Start by turning the cube so that the bad edges are to the right and back of the cube, then perform:
Uu2
Rr2
U2
r2
U2
Rr2
Uu2