The sims 4 Cannot start because of missing or damaged data

I have the exact same problem and I use custom content. I know it's probably one of those but the thing is that before I downloaded some items I had opened the game just fine but now it won't open so I deleted all the recent custom content files but it still won't work. The thing is I am suspecting that one of the files was included with another date and that is why I cannot find it. What should I do?