One Piece Chapter 22, page 25: YOU ARE A RARE AND PRECIOUS ANIMAL TOO

Gaimon breaks down in tears, asking if the chests are empty. Nami gasps in realization. At the top of the hill, Luffy sits quietly next to the five wide-open, completely empty treasure chests. Gaimon weeps, realizing that the treasure had already been taken by someone else before his crew ever found the map.