Why does water leak from a refrigerator?
Internally there are evaporator coils that produce the cold. Condensation will build up on them. There is a drain to the bottom. Often so little water is built up that it evaporates and you never need to empty the drain pan. That drain pipe/tube may be blocked. If the drain is blocked the water will drip into the refrigerator (by design). A fan may have gone out and the coils are iced up. Defrost the whole unit is worth a try - the drain could iced over or the tube could be iced.

A freezer with defrost cycle would not eliminate chance of a drain tube icing.