Can't Put Back the Folder 'The Sims 4 Packs'

So I recently purchased two packs; the vampire game pack and the cats and dogs expansion pack. They were working fine until this afternoon were I went to place a vampire pack object and it said 'failed to compute cost' or 'invalid object definition'. Apparently, this is when you download expansion packs/game packs for free. But I downloaded it, fully paid, on origin. I deleted some faulty/sketchy mods that I've downloaded, but it didn't seem to work. I also travelled to the cats and dogs location and no npc was moving, including my own sim. When I tried to move, it would work for a second, then t-pose for some strange reason. I think this is to do with my folder 'The Sims 4 Packs' randomly on my desktop. I think I accidentally put it there. But I don't know where to put it back, which folder to put it into. If I put it into the folder 'The sims 4' it won't work. 

Any help would be greatly appreciated <3

P.S I have a MacBook Air.