eleanorryd Before doing anything drastic, try a double load: once you get kicked to Manage Worlds with this error code, go right back in and try to load the save. If that doesn't help, try recovering a backup save:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
If that doesn't help either, please post in this bug thread:
https://answers.ea.com/t5/Bug-Reports/NEEDS-SAVES-Game-failed-to-Load-Error-Code-110-83165b0-99987177/m-p/14209796
And share any lastexception you get, plus your save if you're willing, as mentioned in posts 2 and 3.