Aristois

I need help, whenever I try to press Addons Marketplace it doesen't work. Can you help with that?

First of all, I don't know how to get to the .minecraft/logs file, and second of all, all I need is a download link. I had the updated version where I could get the Addons Marketplace and it worked, so please help
@Dyiing
The file was called Arstois 1.16.5. And It was a jar file I think. Please help

Hey everyone, I got rid of the Aristois client because I installed a bad mod that kept my Minecraft crashing. So I need it again but the actual client, not the forge edition. And when I try to install it for vanilla minecraft it crashes. Please help? It was working before, and I had good stuff on it, autominer and stuff. Please help. Thanks! -Reed.
@Dyiing