This happened to me (I think) because my sim had 'simstagram a pet' in their queue when I saved and quit. When I loaded the game I took the picture immediately without being able to cancel the action. After I could not travel, build, or save due to 'Game loading is in progress".
How I fixed this was quitting to main menu, selecting play game again but this time select any other household. I let a few seconds of time pass so that the 'Simstagram pet' action was likely to be over or even canceled by the autonomy of the sim. I then saved on a separate file, quit to menu and when I loaded the game with the other household everything was fine once more.
Hope this helps!
🙂
I did start a Simstagram for my pet and then left now this is happening to me, I'm going to try to remove my CC and add it back in.
