Control chain?

Hello all, my slk 200 didn’t jump after work, tried not to bridge. Next morning he jumped quite normally. Esp lit up, drove into the free workshop, error read out. There were over 40 error messages, including camshaft control. Mechanic says that it is the control chain. What I don’t think was driving with it all the time without problems, if it is the control chain, I would have had problems with the ride. location