Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/homepage/src/commit/861a3d2091301de95cd3d170b0f447c35791620a/docs/widgets/info/openweathermap.md You should set ROOT_URL correctly, otherwise the web may not work correctly.
homepage/docs/widgets/info/openweathermap.md

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title description
OpenWeatherMap OpenWeatherMap Information Widget Configuration

The free tier "One Call API" is all that's required, you will need to subscribe and grab your API key.

- openweathermap:
    label: Kyiv #optional
    latitude: 50.449684
    longitude: 30.525026
    units: metric # or imperial
    provider: openweathermap
    apiKey: youropenweathermapkey # required only if not using provider, this reveals api key in requests
    cache: 5 # Time in minutes to cache API responses, to stay within limits
    format: # optional, Intl.NumberFormat options
      maximumFractionDigits: 1

You can optionally not pass a latitude and longitude and the widget will use your current location (requires a secure context, eg. HTTPS).