I would first recommend you to attempt to repair your Sims 4 installation. To repair The Sims 4, close the game, open the EA app, navigate to your game library, find The Sims 4, click the three dots, and select "Repair".
Also, inside your compromised save, try switching to another household through Manage Worlds and then going back to your original household.
If none of these work, try to move your Mods folder outside of the game's folder and run the game without any custom content. Repeat the steps and see if it works.