On PS4 (currently wiping an entire console another is available for testing):
I've noticed similar issue. My game loads to the spalsh screen, I can click "load" & see my game saves fine. Once I select any game save the blue loading screen appears, the green plumbob spins & the help text that bounces across the bottom of the loading screen begins to rotate.
I have watched the plumbob hang exactly 4 seconds, jag then spin again into the 2nd help text before hard crashing to the PS4 error logging form CE-34878-0. This can be reproduced 100% with 9 of 10 save slots. The 10th is a VERY old save I've kept for sentimental reasons from June 4, 2019.
Also, my game crashed on trying to start a new game. So as of right now this game is basically unplayable for me. I can't restart if I want to & I'm not convinced that single save from last year would even load a 2nd time, that could have been a fluke. Though even if I could play on that save I wouldn't want to I'd want to restart a whole new game & just import in my Sims off my gallery which I can tell you from recent experience doing this takes literally weeks. I just last night finished creating a fresh game save of all 12 worlds.
I imported 97 lots, 68 Households & erased ALL townies & their unwanted lots. Doing so also without using even one single money cheat because testingcheats CANNOT be enabled on a PS4 if you want to earn trophies. So I did it by importing a money tree orchard as a generic lot then having a sim collect 9million Simoleons to then seed every imported household into my game. I started doing this on April 9th. I finished yesterday just in time for the big update!
And now it might mean absolutely nothing.
Also, just as an aside I cannot actually even redownload the game right now because the PS4 is sucking all my bandwidth making it impossible to work from home. So I can either download the Sims or work from home on my VPN or physically go into an office where we have been told do not enter unless your take home hardware has basically set itself on fire.
This is all frustrating. But I'm going to be honest if my biggest problem in life is my dang game wont load but I have a job & my health who am I to complain?
Black lives matter. I'm gonna go now.
Gurus I hope you can fix this before Friday. Please? Thank you.