@neoprana "Continue" in what way? That error message can occur for multiple reasons, all having to do with the security certificate associated with the website using https protocols. The "best" path forward depends on what is the actual reason behind the error, and those reasons can include anything from an improperly-constructed (or forged) cert, a bad browser extension, a problematic antivirus, a corrupted OS cert store, all the way to a genuine browser hiccup.
Since the stored certificate specifies the encryption mechanisms/keys needed to establish secure https communications with a given site, a valid and functioning cert will be needed by the system to visit the website in https - and the error message indicates there's a major problem with that cert. Otherwise, you need to use the unsecured http protocol to visit the site, assuming that connection exists.