frigidaire FFFU14F2QW water drip tray full

We have had the 13.8 cu ft freezer for just over 2 years and only recently have noticed it is leaking. Runs perfect and keeps around 0* depending on what I hit with the temp gun. I searched around, watched some videos and looked in the back of the freezer. The drain was not clogged nor the tube; what I did notice is that the evap pan is full of water. The freezer is in the basement and unless it is malfunctioning my only theory is that it is too humid to evaporate.