Current version of Met.no sunrise API is deprecated
Click on the panel button, go to details tab, it'll show this message in the report
Met.no sunrise API states that this version of the webservice
is deprecated, and the plugin needs to be adapted to use
a newer version, or it will stop working within a few months.
Please file a bug on https://gitlab.xfce.org/panel-plugins/xfce4-weather-plugin/
if no one else has done so yet.