Infinite loading screen

Does this happen for every household? There are a number of fixes for this glitch. First I recommend removing all mods and testing to see if the game works, If it doesn't then the problem is an outdated mod and you have to figure out which one, if it still happens then I suggest you repair your game through Origin. If this bug is only happening with some households you can fix it by loading a household that does work and moving the sims from the bugged household into that household and then splitting them up after in manage worlds. If all of your households are bugged you may be able to restore an older save and see if it works, it could be a corrupt save file. If all else fails you may need to save your sims and make a new save file. I wish you the best!