Hi. Welcome to JustAnswer.If the answer I provide for you is helpful, please click 'ACCEPT'. I won't be paid if you don't. Ok you have a plugged up condensate drain line. To resolve the problem remove the back cover inside of the the freezer compartment. At the bottom of the evaporator coils is a drain hole. Flush it out with a turkey baster and some boiling hot water. Once it is clear the water that is melted off of the evaporator coils during the defrost cycle will once again drain into the evaporation tray above the compressor. The heat from the compressor then evaporates the water back into the ambient air of the kitchen.
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I'll clear the freezer first thing in the morning after I find enough coolers etc. to handle it all and get into it to open the back cover. There must be considerable gasket leakage to produce this much water since it collects between the doors and runs over the freezer light switch where it freezers the switch in the ice maker circuit modeI have to thaw it to get the light operational. If this works I'll gleefully remit your fee.