Sims wont open with symlink after putting mods back in

So recently I have decided to move my sims 4 to an 1tb external drive on my mac (formatted in mac journaled) because it was taking up all of my storage with the amount of cc i have. I did the bluebellaflora's symlink guide and it works fine starting up the game without my mods. I added in a few to see if they would show up, which they did, and after I added them all back the game will not open. Sometimes the game won't respond but then loads up after a few minutes with only the spinning rainbow cursor and the music not playing. Before the symlink my mods and cc were updated and worked perfectly fined, even after the new patch update. I'm just wondering what is causing the issue since many people in the forum for the symlink had the same questions.