YASHICA FX-3

I have had this Yashica FX-3 for some years now. At one point, a few years ago, an ERROR message showed up each time I turned on the camera. Can you tell me about this ERROR and how to fix it?
Thank you so much.

FX-3 is fully manual. Where is the error showing up?

Yeah, as far I can recall the FX 3 does not have read out of any kind.