Since I'm unsure what you mean by you removed everything. please try this:
- Close the game
- Rename Documents\Electronic Arts\The Sims 4 to Documents\Electronic Arts\The Sims 4_Old
- Repair the game
- Start the game. All your content will be gone now as the game created a new folder. All your saves/.. is still in the old folder so not to worry.
- Start a new save game
- Check if you still have the error
- Report back with your results for further steps on how to get your stuff back.
If that doesn't work, check for any LastException files in Documents\Electronic Arts\The Sims 4 and copy/paste the content here. You can open the file with any text editor.
Deleting the file won't fix your issue. Posting the info is meant for troubleshooting.