As an IT professional it's quite common that have to connect web servers with invalid certificates, for different reasons. For expample opening a management GUI of an appliance may be necessary to change its own certificate or TLS settings.
Problem: sometimes chrome won't let you open this website, and gives you no "Proceed on" button. Chrome thinks all its users are end users and does not support professionals.
Workaround: there is a hidden feature: you can type "thisisunsafe" blindly into the error page to proceed. Found on Stackoverflow.
Version: tested with chrome 104