Now, I see them!!! IntelliJ + Outlook + Safari.
Probably you noticed, that #OPNsense can generate a certificate for your HTTPS needs. However, if you choose the algorithm secp521r1, you will notice that Safari/Chrome will not open your page, but #firefox will (hurray!!!).
This is because, Chrome removed the Elliptic Curve 521 support in about 2015…
Link: https://security.stackexchange.com/a/100995
Well… yeah, it is obvious for everyone, but I lost two evenings of intensive debugging ðŸ˜
So, to solve this issue - select secp384r1.
https://github.com/search?q=erorr&type=code
Happy log analyzing...ðŸ˜