I went to play the sims and when I tried to load into my lot it was doing that thing where you get stuck on the loading screen and I've had this issue before but I figured out a way that usually work...
Move your Mods folder to the Desktop and delete localthumbcache.package. Then test the game If it works now check for updates to your Mods and CC. Add it back a little at a time while testing until you have found all that are broken.
About The Sims 4 Technical Issues - PC
PC players get help with their technical issues in The Sims 4 here.52,394 PostsLatest Activity: 15 hours ago