DIAGNOSIS This is condensation, not a leak. It happens when the humid air in your room hits the cold glass surface of the door. It's very common in humid climates or damp basements.
FIX You need to lower the humidity around the fridge. 1) First, try turning the temperature inside up a few degrees. If it's set at 34°F, bump it to 38°F. A less-cold glass means less condensation. 2) Improve air circulation. Make sure there's space around the unit, and maybe run a ceiling fan or a small room dehumidifier nearby. 3) For a quick wipe, use a dry microfiber cloth on the glass. Don't use chemicals, as they can streak.
IF THAT DIDN'T WORK If the fogging is between the glass panes (inside the door itself), that means the door seal is compromised and moisture has gotten into the insulated space. That's a manufacturing defect. You'd need to contact Manastin for a door replacement under warranty.
HEADS UP Check the door gasket (the rubber seal around the door). If it's dirty or not sealing tightly, warm, moist room air can sneak in and make the problem worse. Wipe it down with the baking soda solution and make sure the door closes firmly with a slight resistance.