Hi, my name is XXXXX XXXXX I have been in the home improvement and repair field for 20 years. I will be very glad to help you today. The fridge will have to be defrosted and the drain cleared. There is so little condensation the drain will drip into a small tray at the bottom of the fridge and will evaporate from there. If you remove the lower back panel you will see a small tray where the condensate drains to. You may be able to clear the drain from there but the ice will still have to be removed also.
I am not in a position to rate yet as I'm still on my laptop. I haven't carried out his advice yet.