Saves suddenly unable to play

Ra345

So, I have been trying to fix this issue on my own for a few days but now I'm scared to play my legacy in case this happen to it. I'll play and everything is fine, I'll have to leave so I save and quit. When I go to play sims again, that save is grayed out and tells me I can't play because "it may have been saved with expansion pack data that is no longer found on this system" only nothing has changed about my game. I've tried launching from Origin, launching without Origin, each time the same thing happens. Please help me if you can, or support the thread if something similar is happening to you. Thank you so much for taking time to read this and possibly help.