I see "no internet connection" but I am connected to the internet.

The first step is to just quit and restart the app.

If this error still shows, then it is likely caused by Windows Proxy settings.

To solve this, follow the following steps:

Go to Settings > Network & Internet > Proxy
Under Manual proxy setup, uncheck the box next to 'Use a proxy server for you LAN'
Check the box next to 'Automatically detect settings'