Capacitor V3 and https on localhost test server

Hi, newbie to Capacitor here. We have a web client that’s built using the Quasar framework and now want to use Capacitor to run the client on iOS and Android. We would like to start by using Capacitor v3 but I can’t get the mobile clients to access my test server via https running locally. This does work using v2. Is this possible in v3? If so, how?