No cool air in the side by side refrigrator

My side by side frigde doesn’t have any cool air, get warm both side. I make "clicking sound" , light on, fans is running but the compressor seem not working. I touch the compressor it feel warm. is there any problem with the start relay that mount to the compressor. Any idea on this matter is warmly welcomed. Please help…
thanks so much,
Quang,:confused: