Exporting to Google Calendar doesn't work

[VanillaWhey]

When clicking the link to export to Google Calendar, an error message pops up.

Changing https to http in the source: https://calendar.google.com/calendar/r?cid=http://aideadlin.es/ai-deadlines.ics instead of https://calendar.google.com/calendar/r?cid=https://aideadlin.es/ai-deadlines.ics fixes this issue.