Hello Guys,
I found some alternates here to fix this problem. You need to first take back up of game save files. To do so, follow below steps:
Go to this location: Documents/Electronics Art/The Sims 4/Saves.
Copy this “Saves” file or whole “Sims 4” folder, and keep it paste to safe location in your computer as backup.
Note: Make sure that you're taking backup of saves file while game & origin is not running.
Once backup is done, start following alternates in order to fix this problem:
Alternate 1:
Logout and relogin once into origin, and go to my games to locate sims 4 game, right click on it to select 'Repair Install'.
Once repair is finished, launch your game and retry loading saved game to see if it works now.
In case of alternate 1 fails, go to try alternate 2.
Alternate 2: (Cause - this error may also come due to corrupt game mod files)
Firstly go to desktop screen, and right click on empty space to select new>folder.
Once new folder is created, go to this way Documents/Electronics Art/The Sims 4/ and look for mods folder.
Start moving game mods files one by one or in a group now to new folder ((Don't go at once to move whole files to new folder) Don't use copy & paste files, simply move files to new folder).
After each mod file move, keep testing saved game play.
This above way will help you to locate corrupt game file which you will keep away from game finally then.
This whole process of checking every mod file may be take up to 30-40 minutes in total according to me, but this will indeed help you to sort out this problem for sure.
Alternate 2 can also perform in following way:
Path can be different depending on your OS:
Make a backup of the Sims 4 folder in Documents\Electronic Arts to an external or flash drive.
Rename the The Sims 4 folder in Documents\Electronic Arts to The Sims 4_Backup
Start the game (All your save games will be gone, your options will be reset to factory settings and all your custom content will be gone. Not to worry, it’s all still there in that backup folder).
A new The Sims 4 folder will have been recreated in the documents\Electronic Arts folder. Some folders might be missing for they are only created when you need them.
You will need to start a new game for the other one is still missing right now.
See if your error is gone. If so, you can put starting the folders back.
The following folder contain files you might need. Test after every folder and put them back in the following order (more details on the folder can be found here: User files explained):
Options(.ini): Your graphic/sounds/gameplay options. You can also simply re-set them
Saves: Your save games. More details on what you need can be found here: Save Games. Then content of the two sub folders are not needed. If the game starts to act up again, put each save game back separately and testing afterwards to see what can be saved.
Screenshots: The screen shoots you have taken in game.
Custom Music: If you have any custom music, put them back.
Tray: All your houses, Sims and rooms. If the game starts to act up again, put each file group back separately and testing afterwards to see what can be saved.
Mods: Your custom content or mods. If the game starts to act up again, put each file group back separately and testing afterwards to see what could cause the issue.
Hopefully it will fix this game problem for all of you guys. Best of luck!