Replace freezer fan in whirpool refrigerator

freezer compressor is working if I put a bag of ice in it it stays frozen but it won’t make ice and the frige is warm the fan in the back of the freezer isn’t going on to circulate the cold air. any help on reolacing the fan or other cause for the problem would be appeciated.

Thanks
Al

Im not sure what help you think you need, you’ve diagnosed your problem, the fan in the freezer is not running. Assuming this is the only thing not running, meaning that the compressor and condenser fan are running, then to repair your refrigerator you will need to replace that fan motor.