Got this SSL error since last core update

I have no experience with SSL or ssl certificates. Before I could just point my app to the http without ssl. Now it doesn’t work on my phone and the browser on my laptop only works when I add https instead of http. Any idea how to solve this?

Settings error: https://i.gyazo.com/0ba201429dbe6025f774f085a1c3fed8.png

Popup: SSL is configured without an external URL or inter Error. Reported by HTTP Home Assistant detected that SSL has been set up on your instance, however, no custom external internet URL has been set. This may result in unexpected behavior. Text-to-speech may fail, and integrations may not be able to connect back to your instance correctly. To address this issue, go to Settings > System > Network; under the "Home Assistant URL’ section, configure your new “Internet” and “Local network” addresses that match your new SSL configuration. IGNORE