Attackers might be trying to steal your information from xxx.com (for example, passwords, messages, or credit cards). NET::ERR_CERT_AUTHORITY_INVALID
xxx.com normally uses encryption to protect your information. When Chrome tried to connect to xxx.com this time, the website sent back unusual and incorrect credentials. Either an attacker is trying to pretend to be xxx.com, or a Wi-Fi sign-in screen has interrupted the connection. Your information is still secure because Chrome stopped the connection before any data was exchanged.
You cannot visit xxx.com right now because the website uses HSTS. Network errors and attacks are usually temporary, so this page will probably work later.