PACKAGE MANAGER failed to fetch packages

image

HELP ME PLEASEEEE

Start with:

Put that url into a browser.
https://yak.rhino3d.com/

Can you reach the page and does it load then display something like this?

{
    "version": "0.12.8"
}

Whether the browser can reach the same server will help narrow it down to either probably Rhino or probably something external like a firewall.