I was able to bypass this by opening Origin directly, not clicking on the game icon on my desktop. Waited for the update to finish and was then able to play the game.
@JazzMichelle @abbeylouise1xxx @cait2015 @Player_wo8luutd @CharleyNoel9 @littlemxmi and anyone else having this issue
Please clear Origin's cache (Windows) or run the Origin reset tool (macOS):
https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/
https://help.ea.com/en-us/help/origin/origin/how-to-reset-origin-on-mac/
Restart your computer, open your Origin game library, click on the Sims 4 icon, and press Update. If this doesn't work, clear Origin's cache or run the reset tool again, restart, and then repair the game in Origin: open your game library, right-click on the Sims 4 icon, and select Repair. Try updating again after the repair has finished.
