Page browsers accessing the https protocol will load the certificate required for this page. If the certificate is not trusted, that is, if the certificate is not issued by a formal CA agency (usually generated by itself through a certificate generation tool or command), the chrome browser will Prompt that the page is not secure and will not visit the page directly. At this point, there are two options, choose a safe way (no longer visit this page), and insist on visiting.
In fact, this selection page can be avoided by setting:
1. Enter in the address bar of the chrome browser: chrome://net-internals/
2. Enter the corresponding address domain name (eg: www.seeyii.com or 192.168.1.119:8443) in the Domain under the HSTS tab and click the 'add' button
In this way, when you visit the page of this domain name next time, the previous selection page will not appear.