Docs coming soon.
In the screenshot below
objects.githubusercontent.com got added to the firehollevel3 DNS firewall, presumably at the upstream FireHOL project.
For a domain with that broad of usage, it was probably legitimately being abused somewhere, and hence ended up on that list. But obviously it has a massive impact then on everything else hosted on that domain.
To resolve the issue, you'll have to add
objects.githubusercontent.com to the DNS Firewall local whitelist on Whitespire
Make sure that you are not connected to the Tech VPN when testing.