my launcher will not let me on older releases

if i try too play on a older release it will show a error screen and will say that it did not download (it will do this for all releases but 1.19  i do want to go on 1.17.1 i tryed difrent 1s) i don't know why. if you have any idea how i can fix it pls tell me (thank you and have a good day) (sorry for any typos or spelling mistakes