February 2018
For some reason after the update my sims have not been able to gain weight and also the sliders don't work for me anymore. I have already deleted all the mods and cc that were giving my games problems, but my sims still look like they're starving. Hopefully this issue can be resolved soon.
February 2018 - last edited February 2018
Did you try removing all your mods and then starting the game?
For example, move the mods folder from C:\Users\Username\Documents\Electronic Arts\The Sims 4 to your Desktop and start the game.
If that does not work, try resetting your files to factory settings.
If putting back one of the folders was problematic and you did not work it out, please post a reply and we'll see if we can find what your problem is!
Source: https://help.ea.com/en-us/help/the-sims/the-sims-4/backing-up-and-resetting-the-sims-4/
Good Luck!
February 2018
The error is still there
February 2018
Open your Origin client and go to My Game Library, right-click The Sims 4 and choose Repair.