Somewhere on the back wall inside the fridge will be a drain hole to allow water to drain away down a tube into a plastic tray on top of the compressor motor. Find the drain hole & unblock it by pushing some soft wire cable down. If you can't find drain hole, pull fridge out from wall. Look for the plastic tray on top of the motor. Just above it you should see the end of the drain pipe. Push the soft wire up from here until blockage is clear.
Lincoln Appliance NZ, May 2009