Whirlpool fridge F01 error code

Hi!

I have a Whirlpool side-by-side fridge with ice maker (although it is not currently connected to any water supply). The alarm started beeping and the display showed error F01% and the warning symbol. The freezer temperature was no longer displayed (there were two dashes instead of it). However, the freezer seems to be working properly while the refrigerator is barely cool. I tried to reset it by switching it off but nothing changed afterwards, the error F01% disappeared but the warning symbol was still there and the freezer temperature wasn’t showed…

I am not able to find the fridge manual as it doesn’t have the sticker with the model so I was wondering if you may have any idea of what it’s going on…

Thanks in advance!