Kenmore Fridge Not Cooling and Top of Freezer Warm

I have a Kenmore Model 363-9554720 Side by Side Refrigerator which we recently moved into the house and now the fridge part of it is staying warm and the top shelf of the freezer is warm and it will not keep ice. I have noticed that the fan in the freezer is now not working. Do I need to replace the fan or what else do you recommend.

Thanks for any help.