Save not loading/Infinite loading screen

I’ve been playing this same save for months, and I’ve been recently playing it every day for weeks. As recent as yesterday evening, there were absolutely no issues. This afternoon, I tried to boot up my save, and it wouldn’t load. The game itself opens just fine, but when I press the resume button, it gets stuck on an infinite loading screen. It doesn’t crash, it just keeps loading. I don’t know if it would eventually load if I let it sit for hours. I’ve tried everything I could think of. I tried 50/50 with my mods and cc, didn’t help. I repaired the game, didn’t help. I took out all of my mods and cc, didn’t help. I let the game generate an entirely clean Sims 4 folder and then only added back my save, didn’t work. When I click the new game button, it takes me to CAS and that works fine, but it won’t let me actually play the game past that. I really have no idea what to do. This save is on gen 4 and I really love it so I really want to get it working :[

UPDATE: Got the new game to work fine, the game functions in a new save with all of my mods like usual. I have genuinely no idea what could be wrong with my regular save since it was working just yesterday :/