I'm starting to get these "privacy errors" (with no option to go ahead and load the page even though it's supposedly not private) for lots of sites I visit frequently -- and also for the page on the Brave website about how to disable the "your connection is not private" feature!
Loading that page in Firefox, I find that its only suggestion is this:
You can try going to brave://flags/, searching for allow-insecure-localhost, and set it to enabled. That might give you your desired results.
I tried that. It doesn't work. Do any fellow Brave users have any suggestions? Failing that, does anyone have another browser to recommend?