I am not sure if anyone else is having this problem but i am. Whenever i load AOF3 on the twitch launcher it loads the MC launcher , I then click play and then it says "An unexpected issue occurred and the game has crashed . We're sorry for the inconvenience." Can someone help me ?

Open the error log generated and post the contents, it'll point towards what is stopping the pack from loading.

Did you add or change anything to the pack?

I have now fixed it thank you :D 👍