Many thanks Alan I thought it would be you first with answer as you seem to be the font of knowledge as far as MX-30 is concerned.This can happen when the front radar is obstructed, dirty, glaring sunshine or faulty. The mazda 3 was notorious for this problem and it has shown on the cx30. Some say its temporary like your situation but worth keeping an eye on. Type the error message into Google and the world is your oyster!
Alan