SimpleCalendar\plugin_deps\GuzzleHttp\Exception\RequestException thrown

cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://www.googleapis.com/calendar/v3/calendars/c23t3akaid0cqgmgsnoalsm5vs%40group.calendar.google.com/events?singleEvents=true&maxResults=100&timeMin=2021-06-14T18%3A19%3A27%2B00%3A00&timeMax=2022-03-13T23%3A59%3A59%2B00%3A00&orderBy=startTime&key=AIzaSyBT5d0arSaoUhXs_cazrtckmPAGb1SO_YI