I configured my hosts file and netsch interface so the call to url https://test.mywebsite return https://localhost:3000.
Now, Chrome reacts properly when I call localhost, but when I call mywebsite, it still tells me that my url is not secured. The exact message (with translation):
This server could not prove that it is test.mywebsite. Its security certificate is from localhost. Possible reasons are a bad configuration or an attacker intercepting your connection.

I generated certificates for both *.mywebsite.com and localhost. I added the exact url of mywebsite.com to google chrome://flags/#unsafely-treat-insecure-origin-as-secure, without any success…
It says actually that my certificate is not valid, but I don’t know why (i generated it 30min ago, it is valid until 2026)