ssl Localhost privacy error.How to resolve

I tried to connect with development server certificate Running on IIS express . working with dot net core .Now I m accessing api from dot net client console application giving me ssl error

Warning: Potential Security Risk Ahead Firefox detected a potential security threat and did not continue to localhost. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

Is the URL for HTTP or HTTPS?

https

Accessing api via console application .api is also on development server. i need to by pass validation

https://identityserver4.readthedocs....edentials.html

please run above code