Do you have any LastException files in Documents\Electronic Arts\The Sims 4 ?
Best is to delete the ones you have, then trigger the error and check if new ones are created.
If that is the case, please upload them to a new post in this thread.
Please either create a .rar file to upload or copy/paste the content into your post.
Deleting the file won't fix your issue. Uploading the file is meant for troubleshooting.
@itskachhh Does this happen with all saves, or only the one you're currently playing? Please test a new save for comparison's sake if you haven't already, and do so on a default EA lot with new sims (nothing from the Gallery on either count) in a base game world.
If OneDrive is running on this computer, whether you deliberately use it or not, please pause syncing. You can do so by clicking the cloud icon in the lower-right corner of the screen; if you don't see it, click the ^ icon.
Otherwise, if the new save is affected too, try playing with your computer offline. You can sign into the EA App and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play.
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