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I'm using Brave, too. Are you sure you're requiring that the connection be encrypted with SSL?

It shows the padlock and says the certificate is valid. Maybe your local certs are out of date somehow. You could ask on the Hive discord as I know little about that stuff. https://discord.gg/dp4pAk

For some reason my Brave did not show the padlock symbol. I checked it out and it turned out that I had some "safe sites" setting on.