From time to time you can get a error message telling you that a page is unsafe because a certificate is invalid. This happens in chrome, chromium, microsoft edge or any other chromium based browser.
If you know that page and trust it, you can do the following to load it anyway:

Your connection is not private. Attackers might be trying to steal your information… NET::ER_CERT_COMMON_NAME_INVALID


advanced and click on “proceed to www.mypage.com (unsafe)

or click on a empty area of the page and type:¨
“thisisunsafe“
this will add that page to a permanent exception list.

or you go to “chrome://flags/#allow-insecure-localhost“ and click on the enable link