ERR_CERT_COMMON_NAME_INVALID when tried to visit new subsite

I just added a new site to my multisite network and I’ve receive the following error message
when attempting to log into the admin dashboard:

Your connection is not private
Attackers might be trying to steal your information from s****.m*****
(for example, passwords, messages, or credit cards). Learn more

Help improve Chrome security by sending URLs of some pages you visit, limited system information, and some page content to Google. Privacy policy