Sims 4 legacy save not loading

I did what you told me. I deleted all the exception files and opened up the household. I got into the forever loading screen again. I let it sit for a few minutes and took a look in the Sims 4 folder for new exceptions. Nothing. There is no new lastexception.

dreksteut1​  One random possibility that comes to mind is, do your sims have any traits now that you've removed your mods and cc?  If not, that would cause the game to fail to load the household—each sim needs to have at least one trait.  The fix would be to add back enough cc traits so each sim has at least one, and of course use versions compatible with the current patch level.

If that's not the issue, please try loading the house in Build mode.  Use Load Game rather than Resume, and select the house on the Manage Worlds screen.  Let me know whether this works.

Please also try moving the sims to a different lot, either a blank one or a default EA-made house, and see whether you can load them there.  If not, split the household into individual sims, on various other lots, to find out whether the problem is limited to one of them.

I found the solution!! Turns out it was one of my mods. It was the functional water bowl for dogs and cats mod. It didn't get picked up by any detectors. I tried the 50/50 method and it worked. Thanks anyways for the help you have given me!

dreksteut1​  Well, yes, that's why I asked you to test with no mods or custom content.  In the future, please do that rather than only saying you did and that it didn't help.